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Flyfishing Entomology |
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Updated Taxonomy for The Biology Of Mayflies by Needham/Traver/Hsu |
| BookSpecies | Page | Current Scientific Name | Current Scientific Name (Listed In Book As) | Page | |
| adaequata | 341 | Heptagenia adaequata | Acentrella insignificans (Baetis insignificans) | 692 | |
| adonis | 680 | Baetis adonis | Acentrella parvula (Pseudocloeon parvulum) | 727 | |
| adoptiva | 516 | Paraleptophlebia adoptiva | Acentrella turbida (Pseudocloeon carolina) | 724 | |
| aequivocus | 449 | Ameletus sparsatus | Acentrella turbida (Pseudocloeon turbidum) | 729 | |
| aerodromia | 501 | Siphlonisca aerodromia | Acerpenna akataleptos (Baetis akataleptos) | 681 | |
| aestiva | 580 | Eurylophella aestiva | Acerpenna pygmaea (Baetis harti) | 691 | |
| affiliata | 261 | Hexagenia limbata | Acerpenna pygmaea (Baetis pygmaeus) | 700 | |
| akataleptos | 681 | Acerpenna akataleptos | Ameletus browni (Ameletus browni) | 450 | |
| alamance | 731 | Neocloeon alamance | Ameletus celer (Ameletus alticolus) | 450 | |
| albertae | 398 | Epeorus albertae | Ameletus celer (Ameletus celer) | 451 | |
| albertanus | 554 | Traverella albertana | Ameletus celer (Ameletus celeroides) | 451 | |
| albiannulata | 542 | Choroterpes albiannulata | Ameletus cooki (Ameletus cooki) | 452 | |
| albomanicata | 483 | Isonychia bicolor | Ameletus dissitus (Ameletus dissitus) | 452 | |
| albrighti | 431 | Ametropus fragilis | Ameletus exquisitus (Ameletus exquisitus) | 453 | |
| album | 243 | Ephoron album | Ameletus lineatus (Ameletus lineatus) | 453 | |
| album | 708 | Anafroptilum album | Ameletus ludens (Ameletus ludens) | 454 | |
| allectus | 632 | Tricorythodes allectus | Ameletus oregonensis (Ameletus oregonensis) | 455 | |
| allegheniensis | 580 | Drunella allegheniensis | Ameletus shepherdi (Ameletus shepherdi) | 455 | |
| alternatus | 466 | Siphlonurus alternatus | Ameletus similior (Ameletus similior) | 456 | |
| alticolus | 450 | Ameletus celer | Ameletus sparsatus (Ameletus aequivocus) | 449 | |
| americana | 547 | Habrophlebiodes americana | Ameletus sparsatus (Ameletus sparsatus) | 456 | |
| americanus | 661 | Callibaetis ferrugineus hageni | Ameletus subnotatus (Ameletus subnotatus) | 457 | |
| amica | 373 | Rhithrogena amica | Ameletus validus (Ameletus validus) | 458 | |
| amica | 645 | Caenis amica | Ameletus vancouverensis (Ameletus vancouverensis) | 458 | |
| amplus | 681 | Heterocloeon amplum | Ameletus velox (Ameletus velox) | 459 | |
| anceps | 645 | Caenis anceps | Ameletus vernalis (Ameletus vernalis) | 459 | |
| angusta | 581 | Ephemerella tibialis | Amercaenis ridens (Caenis ridens) | 653 | |
| annexum | 304 | Maccaffertium modestum | Ametropus fragilis (Ametropus albrighti) | 431 | |
| annulata | 484 | Isonychia georgiae | Ametropus fragilis (Ametropus neavei) | 431 | |
| annulata | 548 | Habrophlebiodes annulata | Anafroptilum album (Centroptilum album) | 708 | |
| anomala | 374 | Rhithrogena anomala | Anafroptilum album (Centroptilum convexum) | 712 | |
| aphrodite | 342 | Leucrocuta aphrodite | Anafroptilum album (Centroptilum walshi) | 719 | |
| arctus | 416 | Ironodes arctus | Anafroptilum asperatum (Centroptilum asperatum) | 708 | |
| arida | 485 | Isonychia arida | Anafroptilum asperatum (Centroptilum elsa) | 713 | |
| asperatum | 708 | Anafroptilum asperatum | Anafroptilum bifurcatum (Centroptilum bifurcatum) | 711 | |
| assimilis | 516 | Paraleptophlebia assimilis | Anafroptilum conturbatum (Centroptilum conturbatum) | 712 | |
| associata | 517 | Paraleptophlebia associata | Anafroptilum minor (Cloeon minor) | 737 | |
| atlantica | 386 | Cinygmula subaequalis | Anafroptilum semirufum (Centroptilum semirufum) | 717 | |
| atratus | 633 | Tricorythodes allectus | Anepeorus rusticus (Anepeorus rusticus) | 424 | |
| atrocaudata | 262 | Hexagenia atrocaudata | Anthopotamus distinctus (Potamanthus distinctus) | 280 | |
| attenuata | 581 | Attenella attenuata | Anthopotamus myops (Potamanthus inequalis) | 280 | |
| aurea | 486 | Isonychia similis | Anthopotamus myops (Potamanthus medius) | 281 | |
| aurivillii | 582 | Ephemerella aurivillii | Anthopotamus myops (Potamanthus myops) | 281 | |
| australis | 682 | Labiobaetis frondalis | Anthopotamus myops (Potamanthus rufus) | 282 | |
| austrinus | 534 | Leptophlebia cupida | Anthopotamus neglectus neglectus (Potamanthus neglectus) | 282 | |
| autumnalis | 467 | Siphlonurus autumnalis | Anthopotamus verticis (Potamanthus diaphanus) | 279 | |
| autumnalis | 583 | Drunella spinifera | Anthopotamus verticis (Potamanthus verticis) | 283 | |
| barbaroides | 467 | Siphlonurus barbaroides | Apobaetis etowah (Pseudocloeon etowah) | 726 | |
| barbarus | 468 | Siphlonurus barbarus | Apobaetis futilis (Pseudocloeon futile) | 727 | |
| basale | 440 | Siphloplecton basale | Arthroplea bipunctata (Arthroplea bipunctata) | 426 | |
| basalis | 542 | Choroterpes basalis | Asioplax texana (Tricorythodes texanus) | 638 | |
| bellum | 305 | Maccaffertium mexicanum integrum | Attenella attenuata (Ephemerella attenuata) | 581 | |
| bellum | 709 | Procloeon bellum | Attenella margarita (Ephemerella margarita) | 611 | |
| berenice | 468 | Siphlonurus typicus | Baetis adonis (Baetis adonis) | 680 | |
| betteni | 548 | Habrophlebiodes americana | Baetis bicaudatus (Baetis bicaudatus) | 682 | |
| bicaudatus | 682 | Baetis bicaudatus | Baetis bicaudatus (Baetis minimus) | 694 | |
| bicolor | 289 | Neoephemera bicolor | Baetis brunneicolor (Baetis brunneicolor) | 683 | |
| bicolor | 486 | Isonychia bicolor | Baetis flavistriga (Baetis flavistriga) | 689 | |
| bicolor | 584 | Eurylophella bicolor | Baetis flavistriga (Baetis levitans) | 693 | |
| bicornuta | 517 | Paraleptophlebia bicornuta | Baetis flavistriga (Baetis nanus) | 695 | |
| bifurcatum | 711 | Anafroptilum bifurcatum | Baetis intercalaris (Baetis intercalaris) | 692 | |
| bilineata | 263 | Hexagenia bilineata | Baetis intercalaris (Baetis lasallei) | 693 | |
| bipunctata | 426 | Arthroplea bipunctata | Baetis phoebus (Baetis cingulatus) | 683 | |
| bipunctatum | 306 | Maccaffertium terminatum terminatum | Baetis phoebus (Baetis pallidulus) | 695 | |
| birdi | 306 | Stenonema femoratum | Baetis phoebus (Baetis phoebus) | 697 | |
| blanda | 249 | Ephemera blanda | Baetis piscatoris (Baetis piscatoris) | 697 | |
| bradleyi | 517 | Leptophlebia bradleyi | Baetis pluto (Baetis pluto) | 698 | |
| browni | 450 | Ameletus browni | Baetis posticatus (nomen dubium) | 699 | |
| brunnea | 375 | Rhithrogena hageni | Baetis rusticans (Baetis rusticans) | 701 | |
| brunneicolor | 683 | Baetis brunneicolor | Baetis tricaudatus (Baetis incertans) | 691 | |
| brunneipennis | 518 | Paraleptophlebia brunneipennis | Baetis tricaudatus (Baetis intermedius) | 693 | |
| brunneotincta | 376 | Rhithrogena brunneotincta | Baetis tricaudatus (Baetis moffati) | 694 | |
| californica | 518 | Paraleptophlebia californica | Baetis tricaudatus (Baetis parallelus) | 696 | |
| californicus | 417 | Ironodes californicus | Baetis tricaudatus (Baetis tricaudatus) | 702 | |
| californicus | 662 | Callibaetis californicus | Baetis tricaudatus (Baetis vagans) | 703 | |
| caliginosum | 711 | Procloeon caliginosum | Baetisca callosa (nomen dubium) | 559 | |
| callosa | 559 | Baetisca callosa (nomen dubium) | Baetisca carolina (Baetisca carolina) | 559 | |
| campestris | 487 | Isonychia campestris | Baetisca lacustris (Baetisca lacustris) | 560 | |
| canadense | 307 | Stenacron interpunctatum | Baetisca laurentina (Baetisca laurentina) | 560 | |
| candidum | 308 | Stenacron candidum | Baetisca obesa (Baetisca obesa) | 561 | |
| carolina | 264 | Hexagenia limbata | Baetisca rubescens (Baetisca rubescens) | 562 | |
| carolina | 309 | Stenacron carolina | Brachycercus nitidus (Brachycercus nitidus) | 641 | |
| carolina | 559 | Baetisca carolina | Caenis amica (Caenis amica) | 645 | |
| carolina | 724 | Acentrella turbida | Caenis amica (Caenis simulans) | 653 | |
| carolus | 663 | Callibaetis ferrugineus hageni | Caenis anceps (Caenis anceps) | 645 | |
| catawba | 585 | Ephemerella catawba | Caenis diminuta diminuta (Caenis diminuta) | 648 | |
| celer | 451 | Ameletus celer | Caenis hilaris (Caenis hilaris) | 650 | |
| celeroides | 451 | Ameletus celer | Caenis latipennis (Caenis delicata) | 647 | |
| centralis | 437 | Pseudiron centralis | Caenis latipennis (Caenis forcipata) | 649 | |
| chlorops | 724 | Plauditus dubius | Caenis latipennis (Caenis jocosa) | 651 | |
| christina | 487 | Isonychia bicolor | Caenis latipennis (Caenis latipennis) | 651 | |
| cingulatum | 724 | Plauditus cingulatus | Caenis punctata (Caenis punctata) | 652 | |
| cingulatus | 683 | Baetis phoebus | Caenis tardata (Caenis tardata) | 654 | |
| circe | 488 | Isonychia bicolor | Callibaetis californicus (Callibaetis californicus) | 662 | |
| clara | 519 | Paraleptophlebia clara | Callibaetis ferrugineus ferrugineus (Callibaetis ferrugineus) | 665 | |
| cognata | 585 | Matriella teresa | Callibaetis ferrugineus hageni (Callibaetis americanus) | 661 | |
| collinus | 535 | Leptophlebia cupida | Callibaetis ferrugineus hageni (Callibaetis carolus) | 663 | |
| coloradensis | 586 | Drunella coloradensis | Callibaetis ferrugineus hageni (Callibaetis coloradensis) | 664 | |
| coloradensis | 664 | Callibaetis ferrugineus hageni | Callibaetis ferrugineus hageni (Callibaetis fuscus) | 667 | |
| columbianus | 469 | Siphlonurus columbianus | Callibaetis ferrugineus hageni (Callibaetis hageni) | 668 | |
| compar | 249 | Ephemera blanda | Callibaetis ferrugineus hageni (Callibaetis nigritus) | 669 | |
| compar | 519 | Paraleptophlebia associata | Callibaetis floridanus (Callibaetis floridanus) | 666 | |
| concinnata | 586 | Ephemerella aurivillii | Callibaetis fluctuans (Callibaetis fluctuans) | 666 | |
| conestee | 587 | Drunella tuberculata | Callibaetis montanus (Callibaetis montanus) | 668 | |
| confusa | 387 | Cinygmula par | Callibaetis pallidus (Callibaetis pallidus) | 671 | |
| confusus | 398 | Epeorus pleuralis | Callibaetis pallidus (Callibaetis semicostatus) | 672 | |
| conjunctum | 309 | Stenacron interpunctatum | Callibaetis pictus (Callibaetis doddsi) | 664 | |
| consimilis | 588 | Ephemerella consimilis (nomen dubium) | Callibaetis pictus (Callibaetis pacificus) | 670 | |
| conturbatum | 712 | Anafroptilum conturbatum | Callibaetis pictus (Callibaetis pictus) | 671 | |
| convexum | 712 | Anafroptilum album | Callibaetis pictus (Callibaetis signatus) | 673 | |
| cooki | 452 | Ameletus cooki | Callibaetis pretiosus (Callibaetis pretiosus) | 672 | |
| cornuta | 588 | Drunella cornuta | Callibaetis skokianus (Callibaetis skokianus) | 673 | |
| cornutella | 589 | Drunella cornutella | Campsurus decoloratus (Campsurus decoloratus) | 286 | |
| coxalis | 589 | Dentatella coxalis | Caudatella hystrix (Ephemerella hystrix) | 604 | |
| criddlei | 343 | Ecdyonurus criddlei | Choroterpes albiannulata (Choroterpes albiannulata) | 542 | |
| croesus | 503 | Parameletus croesus | Choroterpes basalis (Choroterpes basalis) | 542 | |
| cruentata | 343 | Raptoheptagenia cruentata | Choroterpes basalis (Choroterpes ferruginea) | 544 | |
| cupidus | 535 | Leptophlebia cupida | Choroterpes inornata (Choroterpes inornata) | 544 | |
| curiosum | 720 | Heterocloeon curiosum | Choroterpes terratoma (Choroterpes terratoma) | 545 | |
| dardanus | 684 | Labiobaetis dardanus | Cinygma dimicki (Cinygma dimicki) | 366 | |
| debilis | 519 | Paraleptophlebia debilis | Cinygma integrum (Cinygma integrum) | 367 | |
| deceptivus | 399 | Epeorus deceptivus | Cinygma lyriforme (Cinygma lyriformis) | 368 | |
| decoloratus | 286 | Campsurus decoloratus | Cinygmula gartrelli (Cinygmula gartrelli) | 388 | |
| decorus | 469 | Siphlonurus decorus | Cinygmula mimus (Cinygmula mimus) | 389 | |
| deficiens | 590 | Teloganopsis deficiens | Cinygmula par (Cinygmula confusa) | 387 | |
| delicata | 647 | Caenis latipennis | Cinygmula par (Cinygmula hyalina) | 388 | |
| depressa | 591 | Drunella cornuta | Cinygmula par (Cinygmula par) | 389 | |
| devinctus | 684 | Diphetor hageni | Cinygmula ramaleyi (Cinygmula ramaleyi) | 390 | |
| diaphanus | 279 | Anthopotamus verticis | Cinygmula reticulata (Cinygmula reticulata) | 391 | |
| dimicki | 366 | Cinygma dimicki | Cinygmula subaequalis (Cinygmula atlantica) | 386 | |
| diminuta | 648 | Caenis diminuta diminuta | Cinygmula subaequalis (Cinygmula subaequalis) | 391 | |
| dispar | 400 | Epeorus dispar | Cinygmula tarda (Cinygmula tarda) | 391 | |
| dissitus | 452 | Ameletus dissitus | Cinygmula uniformis (Cinygmula uniformis) | 392 | |
| distinctus | 280 | Anthopotamus distinctus | Dannella simplex (Ephemerella simplex) | 620 | |
| diversa | 489 | Isonychia campestris | Dentatella coxalis (Ephemerella coxalis) | 589 | |
| doddsi | 376 | Rhithrogena hageni | Diphetor hageni (Baetis devinctus) | 684 | |
| doddsi | 591 | Drunella doddsii | Diphetor hageni (Baetis parvus) | 696 | |
| doddsi | 664 | Callibaetis pictus | Diphetor hageni (Baetis unicolor) | 703 | |
| dolosa | 344 | Heptagenia dolosa | Drunella allegheniensis (Ephemerella allegheniensis) | 580 | |
| doris | 592 | Eurylophella doris | Drunella coloradensis (Ephemerella coloradensis) | 586 | |
| dorothea | 594 | Ephemerella dorothea dorothea | Drunella cornuta (Ephemerella cornuta) | 588 | |
| dubium | 726 | Plauditus dubius | Drunella cornuta (Ephemerella depressa) | 591 | |
| dulciana | 401 | Epeorus dulciana | Drunella cornutella (Ephemerella cornutella) | 589 | |
| elegans | 265 | Hexagenia limbata | Drunella doddsii (Ephemerella doddsi) | 591 | |
| elegantula | 345 | Heptagenia elegantula | Drunella flavilinea (Ephemerella flavilinea) | 596 | |
| elsa | 713 | Anafroptilum asperatum | Drunella grandis flavitincta (Ephemerella flavitincta) | 598 | |
| endymion | 686 | Fallceon quilleri | Drunella grandis grandis (Ephemerella grandis) | 601 | |
| ephippiatus | 687 | Labiobaetis ephippiatus | Drunella grandis ingens (Ephemerella glacialis) | 601 | |
| erebus | 687 | Fallceon quilleri | Drunella grandis ingens (Ephemerella ingens) | 606 | |
| etowah | 726 | Apobaetis etowah | Drunella grandis ingens (Ephemerella proserpina) | 615 | |
| euterpe | 595 | Ephemerella maculata | Drunella grandis ingens (Ephemerella yosemite) | 628 | |
| excrucians | 596 | Ephemerella excrucians | Drunella lata (Ephemerella lata) | 607 | |
| exiguum | 310 | Maccaffertium exiguum | Drunella lata (Ephemerella longicornis) | 608 | |
| exilis | 377 | Rhithrogena exilis | Drunella spinifera (Ephemerella autumnalis) | 583 | |
| explicatus | 634 | Tricorythodes explicatus | Drunella spinifera (Ephemerella spinifera) | 622 | |
| exquisitus | 453 | Ameletus exquisitus | Drunella tuberculata (Ephemerella conestee) | 587 | |
| falcula | 520 | Paraleptophlebia falcula | Drunella tuberculata (Ephemerella tuberculata) | 625 | |
| fallax | 634 | Tricorythodes explicatus | Drunella walkeri (Ephemerella fuscata) | 600 | |
| fasciata | 378 | Rhithrogena fasciata | Drunella walkeri (Ephemerella wayah) | 627 | |
| fattigi | 489 | Isonychia bicolor | Ecdyonurus criddlei (Heptagenia criddlei) | 343 | |
| femoratum | 311 | Stenonema femoratum | Ecdyonurus criddlei (Heptagenia otiosa) | 355 | |
| ferruginea | 544 | Choroterpes basalis | Ecdyonurus criddlei (Heptagenia rosea) | 358 | |
| ferrugineus | 665 | Callibaetis ferrugineus ferrugineus | Ecdyonurus criddlei (Heptagenia rubroventris) | 359 | |
| fictus | 635 | Tricorythodes fictus | Ecdyonurus simplicioides (Heptagenia rodocki) | 357 | |
| flavescens | 346 | Heptagenia flavescens | Ecdyonurus simplicioides (Heptagenia simplicioides) | 361 | |
| flavianula | 378 | Rhithrogena flavianula | Epeorus albertae (Iron albertae) | 398 | |
| flavilinea | 596 | Drunella flavilinea | Epeorus albertae (Iron youngi) | 412 | |
| flavipennis | 418 | Ironodes flavipennis | Epeorus deceptivus (Iron deceptivus) | 399 | |
| flavistriga | 689 | Baetis flavistriga | Epeorus dispar (Iron dispar) | 400 | |
| flavitincta | 598 | Drunella grandis flavitincta | Epeorus dulciana (Iron dulciana) | 401 | |
| flavus | 640 | Sparbarus flavus | Epeorus fragilis (Iron fragilis) | 401 | |
| floridanus | 666 | Callibaetis floridanus | Epeorus fragilis (Iron tenuis) | 412 | |
| fluctuans | 666 | Callibaetis fluctuans | Epeorus grandis (Ironopsis grandis) | 421 | |
| forcipata | 649 | Caenis latipennis | Epeorus hesperus (Iron hesperus) | 403 | |
| fragile | 713 | Procloeon fragile | Epeorus hesperus (Iron sancta-gabriel) | 410 | |
| fragilis | 401 | Epeorus fragilis | Epeorus lagunitas (Iron lagunitas) | 405 | |
| fratercula | 598 | Ephemerella invaria | Epeorus longimanus (Iron longimanus) | 406 | |
| fraudator | 402 | Epeorus pleuralis | Epeorus longimanus (Iron proprius) | 408 | |
| frisoni | 599 | Serratella frisoni | Epeorus permagnus (Ironopsis permagnus) | 423 | |
| frivolus | 690 | Heterocloeon frivolum | Epeorus pleuralis (Iron confusus) | 398 | |
| frondalis | 690 | Labiobaetis frondalis | Epeorus pleuralis (Iron fraudator) | 402 | |
| frontale | 312 | Stenacron interpunctatum | Epeorus pleuralis (Iron pleuralis) | 407 | |
| funeralis | 599 | Eurylophella funeralis | Epeorus punctatus (Iron punctatus) | 409 | |
| fuscata | 600 | Drunella walkeri | Epeorus suffusus (Iron suffusus) | 411 | |
| fuscifrons | 379 | Rhithrogena fuscifrons | Epeorus vitreus (Heptagenia vitrea) | 365 | |
| fuscum | 314 | Maccaffertium vicarium | Epeorus vitreus (Iron humeralis) | 404 | |
| fuscus | 667 | Callibaetis ferrugineus hageni | Epeorus vitreus (Iron rubidus) | 409 | |
| futile | 727 | Apobaetis futilis | Ephemera blanda (Ephemera blanda) | 249 | |
| futilis | 379 | Rhithrogena futilis | Ephemera blanda (Ephemera compar) | 249 | |
| gartrelli | 388 | Cinygmula gartrelli | Ephemera blanda (Ephemera triplex) | 253 | |
| gaspeensis | 380 | Rhithrogena gaspeensis | Ephemera guttulata (Ephemera guttulata) | 250 | |
| geminatus | 418 | Ironodes geminatus (nomen dubium) | Ephemera simulans (Ephemera simulans) | 252 | |
| georgiae | 490 | Isonychia georgiae | Ephemera varia (Ephemera varia) | 254 | |
| georgiana | 521 | Paraleptophlebia georgiana | Ephemerella aurivillii (Ephemerella aurivillii) | 582 | |
| gildersleevei | 315 | Stenacron gildersleevei | Ephemerella aurivillii (Ephemerella concinnata) | 586 | |
| glacialis | 601 | Drunella grandis ingens | Ephemerella catawba (Ephemerella catawba) | 585 | |
| gracilis | 508 | Leptophlebia johnsoni | Ephemerella consimilis (nomen dubium) | 588 | |
| grandis | 421 | Epeorus grandis | Ephemerella dorothea dorothea (Ephemerella dorothea) | 594 | |
| grandis | 537 | Leptophlebia intermedia | Ephemerella dorothea infrequens (Ephemerella infrequens) | 605 | |
| grandis | 601 | Drunella grandis grandis | Ephemerella dorothea infrequens (Ephemerella mollitia) | 613 | |
| gravastellus | 537 | Leptophlebia cupida | Ephemerella excrucians (Ephemerella excrucians) | 596 | |
| gregalis | 521 | Paraleptophlebia gregalis | Ephemerella excrucians (Ephemerella inermis) | 604 | |
| guttata | 522 | Paraleptophlebia guttata | Ephemerella excrucians (Ephemerella semiflava) | 617 | |
| guttulata | 250 | Ephemera guttulata | Ephemerella heterocaudata (nomen dubium) | 603 | |
| hageni | 668 | Callibaetis ferrugineus hageni | Ephemerella invaria (Ephemerella fratercula) | 598 | |
| harperi | 491 | Isonychia bicolor | Ephemerella invaria (Ephemerella invaria) | 607 | |
| harti | 691 | Acerpenna pygmaea | Ephemerella invaria (Ephemerella rotunda) | 616 | |
| hebe | 347 | Leucrocuta hebe | Ephemerella invaria (Ephemerella vernalis) | 626 | |
| hecuba | 602 | Timpanoga hecuba hecuba | Ephemerella maculata (Ephemerella euterpe) | 595 | |
| hesperus | 403 | Epeorus hesperus | Ephemerella maculata (Ephemerella maculata) | 610 | |
| heterocaudata | 603 | Ephemerella heterocaudata (nomen dubium) | Ephemerella molita (nomen dubium) | 613 | |
| heteronea | 523 | Paraleptophlebia heteronea | Ephemerella needhami (Ephemerella needhami) | 614 | |
| heterotarsale | 316 | Stenacron interpunctatum | Ephemerella subvaria (Ephemerella subvaria) | 622 | |
| hilaris | 650 | Caenis hilaris | Ephemerella tibialis (Ephemerella angusta) | 581 | |
| horrida | 348 | Nixe horrida | Ephemerella tibialis (Ephemerella tibialis) | 624 | |
| humeralis | 404 | Epeorus vitreus | Ephemerella unicornis (nomen dubium) | 625 | |
| hyalina | 388 | Cinygmula par | Ephoron album (Ephoron album) | 243 | |
| hystrix | 604 | Caudatella hystrix | Ephoron leukon (Ephoron leukon) | 244 | |
| idei | 641 | Sparbarus lacustris | Eurylophella aestiva (Ephemerella aestiva) | 580 | |
| impersonata | 380 | Rhithrogena impersonata | Eurylophella bicolor (Ephemerella bicolor) | 584 | |
| implicatum | 735 | Procloeon ingens | Eurylophella doris (Ephemerella doris) | 592 | |
| inanum | 735 | Procloeon inanum | Eurylophella funeralis (Ephemerella funeralis) | 599 | |
| incertans | 691 | Baetis tricaudatus | Eurylophella lutulenta (Ephemerella lutulenta) | 609 | |
| incertus | 286 | Tortopsis puella | Eurylophella minimella (Ephemerella minimella) | 612 | |
| inconspicua | 348 | Nixe inconspicua | Eurylophella prudentalis (Ephemerella prudentalis) | 616 | |
| inequalis | 280 | Anthopotamus myops | Eurylophella temporalis (Ephemerella temporalis) | 623 | |
| inermis | 604 | Ephemerella excrucians | Eurylophella verisimilis (Ephemerella verisimilis) | 626 | |
| inflatus | 470 | Siphlonurus occidentalis | Fallceon quilleri (Baetis endymion) | 686 | |
| infrequens | 605 | Ephemerella dorothea infrequens | Fallceon quilleri (Baetis erebus) | 687 | |
| infrequens | 714 | Procloeon pennulatum | Fallceon quilleri (Baetis quilleri) | 700 | |
| ingens | 606 | Drunella grandis ingens | Fallceon thermophilos (Baetis thermophilos) | 702 | |
| ingens | 735 | Procloeon ingens | Habrophlebia vibrans (Habrophlebia pusilla) | 550 | |
| inornata | 544 | Choroterpes inornata | Habrophlebia vibrans (Habrophlebia vibrans) | 551 | |
| insignificans | 692 | Acentrella insignificans | Habrophlebiodes americana (Habrophlebia americana) | 547 | |
| insignificans | 736 | Procloeon insignificans | Habrophlebiodes americana (Habrophlebiodes betteni) | 548 | |
| integrum | 317 | Maccaffertium mexicanum integrum | Habrophlebiodes annulata (Habrophlebiodes annulata) | 548 | |
| integrum | 367 | Cinygma integrum | Heptagenia adaequata (Heptagenia adaequata) | 341 | |
| intercalaris | 692 | Baetis intercalaris | Heptagenia dolosa (Heptagenia dolosa) | 344 | |
| interlineatum | 442 | Siphloplecton interlineatum | Heptagenia elegantula (Heptagenia elegantula) | 345 | |
| intermedia | 491 | Isonychia intermedia | Heptagenia flavescens (Heptagenia flavescens) | 346 | |
| intermediale | 714 | Procloeon intermediale | Heptagenia julia (Heptagenia julia) | 348 | |
| intermedius | 537 | Leptophlebia intermedia | Heptagenia marginalis (Heptagenia marginalis) | 353 | |
| intermedius | 693 | Baetis tricaudatus | Heptagenia pulla (Heptagenia pulla) | 356 | |
| interpunctatum | 317 | Stenacron interpunctatum | Heptagenia solitaria (Heptagenia solitaria) | 361 | |
| invalida | 523 | Paraleptophlebia gregalis | Heptagenia townesi (Heptagenia townesi) | 363 | |
| invaria | 607 | Ephemerella invaria | Heterocloeon amplum (Baetis amplus) | 681 | |
| ithaca | 318 | Maccaffertium ithaca | Heterocloeon curiosum (Heterocloeon curiosum) | 720 | |
| jejuna | 380 | Rhithrogena jejuna | Heterocloeon frivolum (Baetis frivolus) | 690 | |
| jocosa | 651 | Caenis latipennis | Hexagenia atrocaudata (Hexagenia atrocaudata) | 262 | |
| johnsoni | 509 | Leptophlebia johnsoni | Hexagenia bilineata (Hexagenia bilineata) | 263 | |
| julia | 348 | Heptagenia julia | Hexagenia limbata (Hexagenia affiliata) | 261 | |
| juno | 349 | Leucrocuta juno | Hexagenia limbata (Hexagenia carolina) | 264 | |
| kennedyi | 350 | Nixe kennedyi | Hexagenia limbata (Hexagenia elegans) | 265 | |
| lacustris | 560 | Baetisca lacustris | Hexagenia limbata (Hexagenia limbata) | 265 | |
| lacustris | 641 | Sparbarus lacustris | Hexagenia limbata (Hexagenia marilandica) | 266 | |
| lagunitas | 405 | Epeorus lagunitas | Hexagenia limbata (Hexagenia mingo) | 267 | |
| lasallei | 693 | Baetis intercalaris | Hexagenia limbata (Hexagenia munda) | 268 | |
| lata | 607 | Drunella lata | Hexagenia limbata (Hexagenia occulta) | 269 | |
| latipennis | 651 | Caenis latipennis | Hexagenia limbata (Hexagenia pallens) | 271 | |
| laurentina | 560 | Baetisca laurentina | Hexagenia limbata (Hexagenia rosacea) | 273 | |
| lepidus | 419 | Ironodes lepidus | Hexagenia limbata (Hexagenia venusta) | 274 | |
| leukon | 244 | Ephoron leukon | Hexagenia limbata (Hexagenia viridescens) | 275 | |
| levitans | 693 | Baetis flavistriga | Hexagenia limbata (Hexagenia weewa) | 276 | |
| limbata | 265 | Hexagenia limbata | Hexagenia orlando (Hexagenia orlando) | 270 | |
| lineatus | 453 | Ameletus lineatus | Hexagenia rigida (Hexagenia rigida) | 272 | |
| longicornis | 608 | Drunella lata | Ironodes arctus (Ironodes arctus) | 416 | |
| longimanus | 406 | Epeorus longimanus | Ironodes californicus (Ironodes californicus) | 417 | |
| lucidipennis | 351 | Nixe lucidipennis | Ironodes flavipennis (Ironodes flavipennis) | 418 | |
| ludens | 454 | Ameletus ludens | Ironodes geminatus (nomen dubium) | 418 | |
| luridipennis | 470 | Siphlonurus demaryi | Ironodes lepidus (Ironodes lepidus) | 419 | |
| luteum | 319 | Maccaffertium luteum | Ironodes nitidus (Ironodes nitidus) | 419 | |
| lutulenta | 609 | Eurylophella lutulenta | Isonychia arida (Isonychia arida) | 485 | |
| lyriformis | 368 | Cinygma lyriforme | Isonychia arida (Isonychia pictipes) | 495 | |
| maculata | 610 | Ephemerella maculata | Isonychia bicolor (Isonychia albomanicata) | 483 | |
| maculipennis | 352 | Leucrocuta maculipennis | Isonychia bicolor (Isonychia bicolor) | 486 | |
| majus | 320 | Stenacron interpunctatum | Isonychia bicolor (Isonychia christina) | 487 | |
| manca | 492 | Isonychia sicca | Isonychia bicolor (Isonychia circe) | 488 | |
| manifesta | 353 | Rhithrogena manifesta | Isonychia bicolor (Isonychia fattigi) | 489 | |
| margarita | 611 | Attenella margarita | Isonychia bicolor (Isonychia harperi) | 491 | |
| marginalis | 353 | Heptagenia marginalis | Isonychia bicolor (Isonychia matilda) | 492 | |
| marginatus | 471 | Siphlonurus marginatus | Isonychia bicolor (Isonychia pacoleta) | 494 | |
| marilandica | 266 | Hexagenia limbata | Isonychia bicolor (Isonychia sadleri) | 496 | |
| marshalli | 471 | Siphlonurus marshalli | Isonychia campestris (Isonychia campestris) | 487 | |
| matilda | 492 | Isonychia bicolor | Isonychia campestris (Isonychia diversa) | 489 | |
| mediopunctatum | 321 | Maccaffertium mediopunctatum mediopunctatum | Isonychia georgiae (Isonychia annulata) | 484 | |
| medius | 281 | Anthopotamus myops | Isonychia georgiae (Isonychia georgiae) | 490 | |
| mendax | 736 | Procloeon mendax | Isonychia georgiae (Isonychia notata) | 493 | |
| meridionalis | 437 | Pseudiron centralis | Isonychia georgiae (Isonychia thalia) | 499 | |
| micheneri | 611 | Serratella micheneri | Isonychia intermedia (Isonychia intermedia) | 491 | |
| midas | 504 | Parameletus midas | Isonychia obscura (Isonychia obscura) | 494 | |
| mimus | 389 | Cinygmula mimus | Isonychia rufa (Isonychia rufa) | 495 | |
| minerva | 354 | Leucrocuta minerva | Isonychia serrata (Isonychia serrata) | 496 | |
| mingo | 267 | Hexagenia limbata | Isonychia sicca (Isonychia manca) | 492 | |
| minimella | 612 | Eurylophella minimella | Isonychia sicca (Isonychia sicca) | 497 | |
| minimus | 694 | Baetis bicaudatus | Isonychia similis (Isonychia aurea) | 486 | |
| minor | 737 | Anafroptilum minor | Isonychia similis (Isonychia similis) | 498 | |
| minutus | 636 | Tricorythodes explicatus | Isonychia velma (Isonychia velma) | 499 | |
| mirus | 472 | Siphlonurus mirus | Iswaeon rubrolaterale (Pseudocloeon rubrolaterale) | 728 | |
| modestus | 406 | Maccaffertium modestum | Labiobaetis dardanus (Baetis dardanus) | 684 | |
| moerens | 525 | Paraleptophlebia moerens | Labiobaetis ephippiatus (Baetis ephippiatus) | 687 | |
| moffati | 694 | Baetis tricaudatus | Labiobaetis frondalis (Baetis australis) | 682 | |
| molita | 613 | Ephemerella molita (nomen dubium) | Labiobaetis frondalis (Baetis frondalis) | 690 | |
| mollis | 525 | Paraleptophlebia mollis | Labiobaetis propinquus (Baetis propinquus) | 699 | |
| mollitia | 613 | Ephemerella dorothea infrequens | Labiobaetis propinquus (Baetis spinosus) | 701 | |
| montanus | 668 | Callibaetis montanus | Lachlania saskatchewanensis (Pentagenia robusta) | 255 | |
| morrisoni | 381 | Rhithrogena morrisoni | Leptophlebia bradleyi (Paraleptophlebia bradleyi) | 517 | |
| munda | 268 | Hexagenia limbata | Leptophlebia cupida (Blasturus austrinus) | 534 | |
| myops | 281 | Anthopotamus myops | Leptophlebia cupida (Blasturus collinus) | 535 | |
| nanita | 544 | Neochoroterpes nanita | Leptophlebia cupida (Blasturus cupidus) | 535 | |
| nanus | 695 | Baetis flavistriga | Leptophlebia cupida (Blasturus gravastellus) | 537 | |
| neavei | 431 | Ametropus fragilis | Leptophlebia intermedia (Blasturus grandis) | 537 | |
| nebulosus | 538 | Leptophlebia nebulosa | Leptophlebia intermedia (Blasturus intermedius) | 537 | |
| needhami | 614 | Ephemerella needhami | Leptophlebia johnsoni (Leptophlebia gracilis) | 508 | |
| neglectus | 282 | Anthopotamus neglectus neglectus | Leptophlebia johnsoni (Leptophlebia johnsoni) | 509 | |
| nepotellum | 322 | Maccaffertium mediopunctatum mediopunctatum | Leptophlebia nebulosa (Blasturus nebulosus) | 538 | |
| nigritus | 669 | Callibaetis ferrugineus hageni | Leptophlebia pacifica (Blasturus pacificus) | 539 | |
| nitidus | 419 | Ironodes nitidus | Leptophlebia pacifica (Blasturus vibex) | 539 | |
| nitidus | 641 | Brachycercus nitidus | Leucrocuta aphrodite (Heptagenia aphrodite) | 342 | |
| norvegicus | 435 | Metretopus borealis | Leucrocuta hebe (Heptagenia hebe) | 347 | |
| notata | 493 | Isonychia georgiae | Leucrocuta juno (Heptagenia juno) | 349 | |
| obesa | 561 | Baetisca obesa | Leucrocuta maculipennis (Heptagenia maculipennis) | 352 | |
| obscura | 494 | Isonychia obscura | Leucrocuta minerva (Heptagenia minerva) | 354 | |
| occidentalis | 473 | Siphlonurus occidentalis | Leucrocuta thetis (Heptagenia thetis) | 362 | |
| occulta | 269 | Hexagenia limbata | Leucrocuta umbratica (Heptagenia umbratica) | 364 | |
| ohioense | 322 | Stenacron interpunctatum | Leucrocuta walshi (Heptagenia walshi) | 365 | |
| oklahoma | 545 | Neochoroterpes oklahoma | Litobrancha recurvata (Hexagenia recurvata) | 271 | |
| ontario | 526 | Paraleptophlebia ontario | Maccaffertium exiguum (Stenonema exiguum) | 310 | |
| oregonensis | 455 | Ameletus oregonensis | Maccaffertium ithaca (Stenonema ithaca) | 318 | |
| orlando | 270 | Hexagenia orlando | Maccaffertium luteum (Stenonema luteum) | 319 | |
| otiosa | 355 | Ecdyonurus criddlei | Maccaffertium mediopunctatum mediopunctatum (Stenonema mediopunctatum) | 321 | |
| ozburni | 715 | Procloeon ozburni | Maccaffertium mediopunctatum mediopunctatum (Stenonema nepotellum) | 322 | |
| pacificus | 539 | Leptophlebia pacifica | Maccaffertium mexicanum integrum (Stenonema bellum) | 305 | |
| pacificus | 670 | Callibaetis pictus | Maccaffertium mexicanum integrum (Stenonema integrum) | 317 | |
| packii | 526 | Paraleptophlebia packii | Maccaffertium modestum (Iron modestus) | 406 | |
| pacoleta | 494 | Isonychia bicolor | Maccaffertium modestum (Stenonema annexum) | 304 | |
| pallens | 271 | Hexagenia limbata | Maccaffertium modestum (Stenonema rubromaculatum) | 329 | |
| pallidulus | 695 | Baetis phoebus | Maccaffertium modestum (Stenonema rubrum) | 330 | |
| pallidum | 323 | Stenacron pallidum | Maccaffertium modestum (Stenonema varium) | 333 | |
| pallidus | 671 | Callibaetis pallidus | Maccaffertium pudicum (Stenonema pudicum) | 326 | |
| pallipes | 527 | Paraleptophlebia memorialis | Maccaffertium pulchellum (Stenonema pulchellum) | 327 | |
| par | 389 | Cinygmula par | Maccaffertium terminatum placitum (Stenonema placitum) | 324 | |
| parallelus | 696 | Baetis tricaudatus | Maccaffertium terminatum terminatum (Stenonema bipunctatum) | 306 | |
| parvulum | 727 | Acentrella parvula | Maccaffertium terminatum terminatum (Stenonema terminatum) | 331 | |
| parvus | 696 | Diphetor hageni | Maccaffertium vicarium (Stenonema fuscum) | 314 | |
| perfida | 355 | Nixe perfida | Maccaffertium vicarium (Stenonema rivulicolum) | 328 | |
| permagnus | 423 | Epeorus permagnus | Maccaffertium vicarium (Stenonema vicarium) | 334 | |
| persimplex | 356 | Macdunnoa persimplex | Macdunnoa persimplex (Heptagenia persimplex) | 356 | |
| petulans | 381 | Rhithrogena morrisoni | Matriella teresa (Ephemerella cognata) | 585 | |
| phoebus | 697 | Baetis phoebus | Matriella teresa (Ephemerella teresa) | 624 | |
| phyllis | 474 | Siphlonurus phyllis | Metretopus borealis (Metretopus norvegicus) | 435 | |
| pictipes | 495 | Isonychia arida | Neochoroterpes nanita (Choroterpes nanita) | 544 | |
| pictus | 671 | Callibaetis pictus | Neochoroterpes oklahoma (Choroterpes oklahoma) | 545 | |
| piscatoris | 697 | Baetis piscatoris | Neocloeon alamance (Neocloeon alamance) | 731 | |
| placitum | 324 | Maccaffertium terminatum placitum | Neocloeon triangulifer (Cloeon triangulifer) | 738 | |
| pleuralis | 407 | Epeorus pleuralis | Neoephemera bicolor (Neoephemera bicolor) | 289 | |
| pluto | 698 | Baetis pluto | Neoephemera purpurea (Oreianthus purpureus) | 291 | |
| posticatus | 699 | Baetis posticatus (nomen dubium) | Nixe horrida (Heptagenia horrida) | 348 | |
| praepedita | 527 | Paraleptophlebia praepedita | Nixe inconspicua (Heptagenia inconspicua) | 348 | |
| presidianus | 555 | Traverella presidiana | Nixe kennedyi (Heptagenia kennedyi) | 350 | |
| pretiosus | 672 | Callibaetis pretiosus | Nixe lucidipennis (Heptagenia lucidipennis) | 351 | |
| primus | 287 | Tortopsis primus | Nixe perfida (Heptagenia perfida) | 355 | |
| propinquus | 699 | Labiobaetis propinquus | Nixe rusticalis (Heptagenia rusticalis) | 360 | |
| proprius | 408 | Epeorus longimanus | Nixe spinosa (Heptagenia spinosa) | 362 | |
| proserpina | 615 | Drunella grandis ingens | Paraleptophlebia adoptiva (Paraleptophlebia adoptiva) | 516 | |
| proximum | 325 | Stenacron interpunctatum | Paraleptophlebia assimilis (Paraleptophlebia assimilis) | 516 | |
| prudens | 642 | Susperatus prudens | Paraleptophlebia associata (Paraleptophlebia associata) | 517 | |
| prudentalis | 616 | Eurylophella prudentalis | Paraleptophlebia associata (Paraleptophlebia compar) | 519 | |
| pudicum | 326 | Maccaffertium pudicum | Paraleptophlebia bicornuta (Paraleptophlebia bicornuta) | 517 | |
| puella | 288 | Tortopsis puella | Paraleptophlebia brunneipennis (Paraleptophlebia brunneipennis) | 518 | |
| pulchellum | 327 | Maccaffertium pulchellum | Paraleptophlebia californica (Paraleptophlebia californica) | 518 | |
| pulla | 356 | Heptagenia pulla | Paraleptophlebia clara (Paraleptophlebia clara) | 519 | |
| punctata | 652 | Caenis punctata | Paraleptophlebia debilis (Paraleptophlebia debilis) | 519 | |
| punctatus | 409 | Epeorus punctatus | Paraleptophlebia falcula (Paraleptophlebia falcula) | 520 | |
| punctiventris | 728 | Plauditus punctiventris | Paraleptophlebia georgiana (Paraleptophlebia georgiana) | 521 | |
| purpureus | 291 | Neoephemera purpurea | Paraleptophlebia gregalis (Paraleptophlebia gregalis) | 521 | |
| pusilla | 550 | Habrophlebia vibrans | Paraleptophlebia gregalis (Paraleptophlebia invalida) | 523 | |
| pygmaeus | 700 | Acerpenna pygmaea | Paraleptophlebia guttata (Paraleptophlebia guttata) | 522 | |
| quaesitum | 715 | Procloeon quaesitum | Paraleptophlebia heteronea (Paraleptophlebia heteronea) | 523 | |
| quebecensis | 474 | Siphlonurus quebecensis | Paraleptophlebia memorialis (Paraleptophlebia pallipes) | 527 | |
| quilleri | 700 | Fallceon quilleri | Paraleptophlebia moerens (Paraleptophlebia moerens) | 525 | |
| ramaleyi | 390 | Cinygmula ramaleyi | Paraleptophlebia mollis (Paraleptophlebia mollis) | 525 | |
| rapidus | 475 | Siphlonurus rapidus | Paraleptophlebia ontario (Paraleptophlebia ontario) | 526 | |
| recurvata | 271 | Litobrancha recurvata | Paraleptophlebia packii (Paraleptophlebia packii) | 526 | |
| reticulata | 391 | Cinygmula reticulata | Paraleptophlebia praepedita (Paraleptophlebia praepedita) | 527 | |
| ridens | 653 | Amercaenis ridens | Paraleptophlebia rufivenosa (Paraleptophlebia rufivenosa) | 528 | |
| rigida | 272 | Hexagenia rigida | Paraleptophlebia sculleni (Paraleptophlebia sculleni) | 528 | |
| rivulare | 716 | Procloeon rivulare | Paraleptophlebia strigula (Paraleptophlebia strigula) | 529 | |
| rivulicolum | 328 | Maccaffertium vicarium | Paraleptophlebia swannanoa (Paraleptophlebia swannanoa) | 529 | |
| robusta | 255 | Lachlania saskatchewanensis | Paraleptophlebia temporalis (Paraleptophlebia temporalis) | 529 | |
| robusta | 382 | Rhithrogena robusta | Paraleptophlebia vaciva (Paraleptophlebia vaciva) | 530 | |
| rodocki | 357 | Ecdyonurus simplicioides | Paraleptophlebia volitans (Paraleptophlebia volitans) | 530 | |
| rosacea | 273 | Hexagenia limbata | Parameletus croesus (Parameletus croesus) | 503 | |
| rosea | 358 | Ecdyonurus criddlei | Parameletus midas (Parameletus midas) | 504 | |
| rotunda | 616 | Ephemerella invaria | Penelomax septentrionalis (Ephemerella septentrionalis) | 618 | |
| rubescens | 562 | Baetisca rubescens | Pentagenia vittigera (Pentagenia vittigera) | 256 | |
| rubidus | 409 | Epeorus vitreus | Plauditus cingulatus (Pseudocloeon cingulatum) | 724 | |
| rubrolaterale | 728 | Iswaeon rubrolaterale | Plauditus dubius (Pseudocloeon chlorops) | 724 | |
| rubromaculatum | 329 | Maccaffertium modestum | Plauditus dubius (Pseudocloeon dubium) | 726 | |
| rubropictum | 737 | Procloeon rubropictum | Plauditus punctiventris (Pseudocloeon punctiventris) | 728 | |
| rubroventris | 359 | Ecdyonurus criddlei | Plauditus veteris (Pseudocloeon veteris) | 729 | |
| rubrum | 330 | Maccaffertium modestum | Plauditus virilis (Pseudocloeon virile) | 729 | |
| rufa | 495 | Isonychia rufa | Procloeon bellum (Centroptilum bellum) | 709 | |
| rufivenosa | 528 | Paraleptophlebia rufivenosa | Procloeon caliginosum (Centroptilum caliginosum) | 711 | |
| rufostrigatum | 717 | Procloeon rufostrigatum | Procloeon fragile (Centroptilum fragile) | 713 | |
| rufus | 282 | Anthopotamus myops | Procloeon inanum (Cloeon inanum) | 735 | |
| rusticalis | 360 | Nixe rusticalis | Procloeon ingens (Cloeon implicatum) | 735 | |
| rusticans | 701 | Baetis rusticans | Procloeon ingens (Cloeon ingens) | 735 | |
| rusticus | 424 | Anepeorus rusticus | Procloeon insignificans (Cloeon insignificans) | 736 | |
| sadleri | 496 | Isonychia bicolor | Procloeon intermediale (Centroptilum intermediale) | 714 | |
| sancta-gabriel | 410 | Epeorus hesperus | Procloeon mendax (Cloeon mendax) | 736 | |
| scitulum | 330 | Stenonema femoratum | Procloeon ozburni (Centroptilum ozburni) | 715 | |
| sculleni | 528 | Paraleptophlebia sculleni | Procloeon pennulatum (Centroptilum infrequens) | 714 | |
| securifer | 475 | Siphlonurus securifer | Procloeon quaesitum (Centroptilum quaesitum) | 715 | |
| semicostatus | 672 | Callibaetis pallidus | Procloeon rivulare (Centroptilum rivulare) | 716 | |
| semiflava | 617 | Ephemerella excrucians | Procloeon rubropictum (Cloeon rubropictum) | 737 | |
| semirufum | 717 | Anafroptilum semirufum | Procloeon rufostrigatum (Centroptilum rufostrigatum) | 717 | |
| septentrionalis | 618 | Penelomax septentrionalis | Procloeon simile (Centroptilum simile) | 718 | |
| serrata | 496 | Isonychia serrata | Procloeon simplex (Cloeon simplex) | 738 | |
| serrata | 619 | Serratella serrata | Procloeon venosum (Centroptilum venosum) | 718 | |
| serratoides | 619 | Serratella serratoides | Procloeon vicinum (Cloeon vicinum) | 738 | |
| shepherdi | 455 | Ameletus shepherdi | Pseudiron centralis (Pseudiron centralis) | 437 | |
| sicca | 497 | Isonychia sicca | Pseudiron centralis (Pseudiron meridionalis) | 437 | |
| signatum | 442 | Siphloplecton basale | Raptoheptagenia cruentata (Heptagenia cruentata) | 343 | |
| signatus | 673 | Callibaetis pictus | Rhithrogena amica (Rhithrogena amica) | 373 | |
| simile | 718 | Procloeon simile | Rhithrogena anomala (Rhithrogena anomala) | 374 | |
| similior | 456 | Ameletus similior | Rhithrogena brunneotincta (Rhithrogena brunneotincta) | 376 | |
| similis | 498 | Isonychia similis | Rhithrogena exilis (Rhithrogena exilis) | 377 | |
| simplex | 424 | Spinadis simplex | Rhithrogena fasciata (Rhithrogena fasciata) | 378 | |
| simplex | 620 | Dannella simplex | Rhithrogena flavianula (Rhithrogena flavianula) | 378 | |
| simplex | 738 | Procloeon simplex | Rhithrogena fuscifrons (Rhithrogena fuscifrons) | 379 | |
| simplicioides | 361 | Ecdyonurus simplicioides | Rhithrogena futilis (Rhithrogena futilis) | 379 | |
| simulans | 252 | Ephemera simulans | Rhithrogena gaspeensis (Rhithrogena gaspeensis) | 380 | |
| simulans | 653 | Caenis amica | Rhithrogena hageni (Rhithrogena brunnea) | 375 | |
| skokianus | 673 | Callibaetis skokianus | Rhithrogena hageni (Rhithrogena doddsi) | 376 | |
| solitaria | 361 | Heptagenia solitaria | Rhithrogena impersonata (Rhithrogena impersonata) | 380 | |
| sordida | 621 | Serratella serrata | Rhithrogena jejuna (Rhithrogena jejuna) | 380 | |
| sparsatus | 456 | Ameletus sparsatus | Rhithrogena manifesta (Heptagenia manifesta) | 353 | |
| speciosum | 443 | Siphloplecton speciosum | Rhithrogena morrisoni (Rhithrogena morrisoni) | 381 | |
| speciosus | 552 | Thraulodes speciosus | Rhithrogena morrisoni (Rhithrogena petulans) | 381 | |
| spectabilis | 476 | Siphlonurus spectabilis | Rhithrogena robusta (Rhithrogena robusta) | 382 | |
| spinifera | 622 | Drunella spinifera | Rhithrogena uhari (Rhithrogena uhari) | 383 | |
| spinosa | 362 | Nixe spinosa | Rhithrogena undulata (Rhithrogena undulata) | 383 | |
| spinosus | 701 | Labiobaetis propinquus | Rhithrogena virilis (Rhithrogena virilis) | 384 | |
| strigula | 529 | Paraleptophlebia strigula | Serratella frisoni (Ephemerella frisoni) | 599 | |
| stygiatus | 637 | Tricorythodes stygiatus | Serratella micheneri (Ephemerella micheneri) | 611 | |
| subaequalis | 391 | Cinygmula subaequalis | Serratella serrata (Ephemerella serrata) | 619 | |
| subnotatus | 457 | Ameletus subnotatus | Serratella serrata (Ephemerella sordida) | 621 | |
| subvaria | 622 | Ephemerella subvaria | Serratella serratoides (Ephemerella serratoides) | 619 | |
| suffusus | 411 | Epeorus suffusus | Siphlonisca aerodromia (Siphlonisca aerodromia) | 501 | |
| swannanoa | 529 | Paraleptophlebia swannanoa | Siphlonurus alternatus (Siphlonurus alternatus) | 466 | |
| tarda | 391 | Cinygmula tarda | Siphlonurus autumnalis (Siphlonurus autumnalis) | 467 | |
| tardata | 654 | Caenis tardata | Siphlonurus barbaroides (Siphlonurus barbaroides) | 467 | |
| temporalis | 529 | Paraleptophlebia temporalis | Siphlonurus barbarus (Siphlonurus barbarus) | 468 | |
| temporalis | 623 | Eurylophella temporalis | Siphlonurus columbianus (Siphlonurus columbianus) | 469 | |
| tenuis | 412 | Epeorus fragilis | Siphlonurus decorus (Siphlonurus decorus) | 469 | |
| teresa | 624 | Matriella teresa | Siphlonurus demaryi (Siphlonurus luridipennis) | 470 | |
| terminatum | 331 | Maccaffertium terminatum terminatum | Siphlonurus marginatus (Siphlonurus marginatus) | 471 | |
| terratoma | 545 | Choroterpes terratoma | Siphlonurus marshalli (Siphlonurus marshalli) | 471 | |
| texanus | 638 | Asioplax texana | Siphlonurus mirus (Siphlonurus mirus) | 472 | |
| thalia | 499 | Isonychia georgiae | Siphlonurus occidentalis (Siphlonurus inflatus) | 470 | |
| thermophilos | 702 | Fallceon thermophilos | Siphlonurus occidentalis (Siphlonurus occidentalis) | 473 | |
| thetis | 362 | Leucrocuta thetis | Siphlonurus phyllis (Siphlonurus phyllis) | 474 | |
| tibialis | 624 | Ephemerella tibialis | Siphlonurus quebecensis (Siphlonurus quebecensis) | 474 | |
| townesi | 363 | Heptagenia townesi | Siphlonurus rapidus (Siphlonurus rapidus) | 475 | |
| triangulifer | 738 | Neocloeon triangulifer | Siphlonurus securifer (Siphlonurus securifer) | 475 | |
| tricaudatus | 702 | Baetis tricaudatus | Siphlonurus spectabilis (Siphlonurus spectabilis) | 476 | |
| triplex | 253 | Ephemera blanda | Siphlonurus typicus (Siphlonurus berenice) | 468 | |
| tripunctatum | 332 | Stenonema femoratum | Siphlonurus typicus (Siphlonurus typicus) | 477 | |
| tuberculata | 625 | Drunella tuberculata | Siphloplecton basale (Siphloplecton basale) | 440 | |
| turbidum | 729 | Acentrella turbida | Siphloplecton basale (Siphloplecton signatum) | 442 | |
| typicus | 477 | Siphlonurus typicus | Siphloplecton interlineatum (Siphloplecton interlineatum) | 442 | |
| uhari | 383 | Rhithrogena uhari | Siphloplecton speciosum (Siphloplecton speciosum) | 443 | |
| umbratica | 364 | Leucrocuta umbratica | Sparbarus flavus (Brachycercus flavus) | 640 | |
| undulata | 383 | Rhithrogena undulata | Sparbarus lacustris (Brachycercus idei) | 641 | |
| unicolor | 703 | Diphetor hageni | Sparbarus lacustris (Brachycercus lacustris) | 641 | |
| unicornis | 625 | Ephemerella unicornis (nomen dubium) | Spinadis simplex (Anepeorus simplex) | 424 | |
| uniformis | 392 | Cinygmula uniformis | Stenacron candidum (Stenonema candidum) | 308 | |
| vaciva | 530 | Paraleptophlebia vaciva | Stenacron carolina (Stenonema carolina) | 309 | |
| vagans | 703 | Baetis tricaudatus | Stenacron gildersleevei (Stenonema gildersleevei) | 315 | |
| validus | 458 | Ameletus validus | Stenacron interpunctatum (Stenonema canadense) | 307 | |
| vancouverensis | 458 | Ameletus vancouverensis | Stenacron interpunctatum (Stenonema conjunctum) | 309 | |
| varia | 254 | Ephemera varia | Stenacron interpunctatum (Stenonema frontale) | 312 | |
| varium | 333 | Maccaffertium modestum | Stenacron interpunctatum (Stenonema heterotarsale) | 316 | |
| velma | 499 | Isonychia velma | Stenacron interpunctatum (Stenonema interpunctatum) | 317 | |
| velox | 459 | Ameletus velox | Stenacron interpunctatum (Stenonema majus) | 320 | |
| venosum | 718 | Procloeon venosum | Stenacron interpunctatum (Stenonema ohioense) | 322 | |
| venusta | 274 | Hexagenia limbata | Stenacron interpunctatum (Stenonema proximum) | 325 | |
| verisimilis | 626 | Eurylophella verisimilis | Stenacron pallidum (Stenonema pallidum) | 323 | |
| vernalis | 459 | Ameletus vernalis | Stenonema femoratum (Stenonema birdi) | 306 | |
| vernalis | 626 | Ephemerella invaria | Stenonema femoratum (Stenonema femoratum) | 311 | |
| verticis | 283 | Anthopotamus verticis | Stenonema femoratum (Stenonema scitulum) | 330 | |
| veteris | 729 | Plauditus veteris | Stenonema femoratum (Stenonema tripunctatum) | 332 | |
| vibex | 539 | Leptophlebia pacifica | Susperatus prudens (Brachycercus prudens) | 642 | |
| vibrans | 551 | Habrophlebia vibrans | Teloganopsis deficiens (Ephemerella deficiens) | 590 | |
| vicarium | 334 | Maccaffertium vicarium | Thraulodes speciosus (Thraulodes speciosus) | 552 | |
| vicinum | 738 | Procloeon vicinum | Timpanoga hecuba hecuba (Ephemerella hecuba) | 602 | |
| viridescens | 275 | Hexagenia limbata | Tortopsis primus (Campsurus primus) | 287 | |
| virile | 729 | Plauditus virilis | Tortopsis puella (Campsurus incertus) | 286 | |
| virilis | 384 | Rhithrogena virilis | Tortopsis puella (Campsurus puella) | 288 | |
| vitrea | 365 | Epeorus vitreus | Traverella albertana (Thraulus albertanus) | 554 | |
| vittigera | 256 | Pentagenia vittigera | Traverella presidiana (Thraulus presidianus) | 555 | |
| volitans | 530 | Paraleptophlebia volitans | Tricorythodes allectus (Tricorythodes allectus) | 632 | |
| walshi | 365 | Leucrocuta walshi | Tricorythodes allectus (Tricorythodes atratus) | 633 | |
| walshi | 719 | Anafroptilum album | Tricorythodes explicatus (Tricorythodes explicatus) | 634 | |
| wayah | 627 | Drunella walkeri | Tricorythodes explicatus (Tricorythodes fallax) | 634 | |
| weewa | 276 | Hexagenia limbata | Tricorythodes explicatus (Tricorythodes minutus) | 636 | |
| yosemite | 628 | Drunella grandis ingens | Tricorythodes fictus (Tricorythodes fictus) | 635 | |
| youngi | 412 | Epeorus albertae | Tricorythodes stygiatus (Tricorythodes stygiatus) | 637 |
Created: 03/08/2007 Last modified: 03/06/2016 www.FlyfishingEntomology.com