| Habrophlebia | Larva - gill | Bouchard p. 54 fig. 4.29a |
| Habrophlebia | Larva - gill 5 | Merritt p. 134 fig. 11.26 |
| Habrophlebia | Imago - hind wing | McClane p. 611 |
| Habrophlebia vibrans | Imago - fore wing, male | Berner - p. 58 fig. 17 |
| Habrophlebia vibrans | Larva - 3rd gill | Berner - p. 76 fig. 136 |
| Habrophlebia vibrans | Imago - male genitalia | Needham p. 549 a |
| Habrophlebia vibrans | Imago - hind wing, male | Berner - p. 60 fig. 43 |
| Habrophlebia vibrans | Imago - fore & hind wing | Needham p. 550 |
| Habrophlebia vibrans | Imago - male genitalia | Berner - p. 68 fig. 59 |
| Habrophlebia vibrans (Habrophlebia pusilla) | Imago - male genitalia | Needham p. 549 e |
| Habrophlebia vibrans (Habrophlebia pusilla) | Larva - gills 1, 4 | Needham p. 550 a&b |
| Habrophlebiodes | Larva - labrum | Merritt p. 138 fig. 11.65 |
| Habrophlebiodes | Imago - hind wing | McClane p. 611 |
| Habrophlebiodes | Larva - gill 4 | Merritt p. 141 fig. 11.69 |
| Habrophlebiodes | Larva - abdominal segments 5-8 | Merritt p. 141 fig. 11.70 |
| Habrophlebiodes americana | Imago - male genitalia | Needham p. 549 c |
| Habrophlebiodes americana (Habrophlebiodes betteni) | Imago - fore & hind wing | Needham p. 546 |
| Habrophlebiodes americana (Habrophlebiodes betteni) | Imago - male genitalia | Needham p. 549 d |
| Habrophlebiodes annulata | Imago - male genitalia | Needham p. 549 b |
| Habrophlebiodes brunneipennis | Imago - hind wing, male | Berner - p. 60 fig. 41 |
| Habrophlebiodes brunneipennis | Larva - labrum | Berner - p. 74 fig. 93 |
| Habrophlebiodes brunneipennis | Larva - dorsal view | Berner - p. 234 plate 12 |
| Habrophlebiodes brunneipennis | Imago - male lateral view | Berner - p. 232 plate 11 |
| Habrophlebiodes brunneipennis | Imago - female term. abd. segs., lateral | Berner - p. 236 fig. 171 upper |
| Habrophlebiodes brunneipennis | Imago - fore wing, male | Berner - p. 58 fig. 20 |
| Habrophlebiodes brunneipennis | Imago - male genitalia | Berner - p. 68 fig. 67 |
| Hagenella canadensis | Larva - head & thorax dorsal | Merritt p. 379 fig. 18.230 |
| Hagenius brevistylus | Larva - larva | McCafferty p. 138 fig. 08.20 |
| Halacaridae | Imago - adult dorsal | McCafferty p. 400 fig. 23.05 |
| Halesochila taylori | Larva - abdomen lateral view | Merritt p. 373 fig. 18.176 |
| Halesochila taylori | Larva - head dorsal | Merritt p. 372 fig. 18.170 |
| Halesochila taylori | Larva - mesonotum dorsal view | Merritt p. 373 fig. 18.174 |
| Haliplidae | Larva - leg | Bouchard p. 46 fig. 3.52 |
| Haliplidae | Larva - leg w/5 segments | Bouchard p. 146 fig. 12.8 |
| Haliplus | Larva - dorsal view | Merritt p. 416 fig. 20.054 |
| Haliplus | Larva - larva | Schwiebert p.123 |
| Haliplus | Larva - lore leg | Merritt p. 416 fig. 20.055 |
| Haliplus | Imago - dorsal view | Merritt p. 416 fig. 20.060 |
| Haliplus | Larva - larva | McCafferty p. 214 fig. 13.07 |
| Haliplus | Imago - prosternum | Merritt p. 416 fig. 20.062 |
| Haliplus triopsis | Imago - adult | McCafferty p. 214 fig. 13.05 |
| Haliplus triopsis | Larva - mid leg | McCafferty p. 214 fig. 13.06 |
| Halobates | Imago - hind leg lateral | Merritt p. 281 fig. 15.80 |
| Haploperla (Hastaperla) | Imago - fore wing | McCafferty p. 165 fig. 09.37 |
| Haploperla (Hastaperla) | Larva - wing pads & abdomen | McCafferty p. 165 fig. 09.36 |
| Haploperla brevis | Larva - dorsal view | Merritt p. 223 fig. 14.04h |
| Haploperla brevis | Larva - right lacinia ventral | Merritt p. 234 fig. 14.75k |
| Haploperla brevis | Larva - wing pads | Merritt p. 233 fig. 14.68 |
| Harpalus | Imago - thoracic region ventral | Merritt p. 409 fig. 20.034 |
| Hebrus | Imago - antenna | Merritt p. 282 fig. 15.85 |
| Hebrus (Naeogeus) | Imago - dorsal view | Bouchard p. 99 fig. 7.36 |
| Hebrus consolidus | Imago - adult | McCafferty p. 185 fig. 10.23 |
| Hebrus consolidus | Imago - head | McCafferty p. 185 fig. 10.24 |
| Hebrus sobrinus | Imago - fore wing dorsal | Bouchard p. 96 fig. 7.28 |
| Hebrus sobrinus | Imago - dorsal view | Merritt p. 282 fig. 15.82 |
| Hedria | Larva - lateral view | Bouchard p. 181 fig. 13.85 |
| Helcomyza mirabilis | Imago - adult | McCafferty p. 354 fig. 17.18 |
| Helichus | Imago - dorsal view | Bouchard p. 151 fig. 12.26 |
| Helichus | Larva - spiracle & closing apparatus | Merritt p. 445 fig. 20.223 |
| Helichus | Larva - mandible | Merritt p. 445 fig. 20.222 |
| Helichus | Larva - lateral view | Merritt p. 445 fig. 20.220 |
| Helichus | Larva - dorsal view | Merritt p. 447 fig. 20.230 |
| Helichus | Larva - abdominal apex lateral | Merritt p. 445 fig. 20.221 |
| Helichus | Imago - head ventral | Merritt p. 447 fig. 20.229 |
| Helichus | Imago - antenna | Merritt p. 447 fig. 20.227 |
| Helichus | Imago - antenna | Bouchard p. 150 fig. 12.25 |
| Helichus | Imago - lateral view | Merritt p. 447 fig. 20.228 |
| Helichus fastigiatus | Imago - adult | McCafferty p. CP XI fig. 067 |
| Helichus lithophilus | Imago - adult | McCafferty p. 229 fig. 13.49 |
| Helicopsyche | larva - cased lateral | Pobst - p. 36-b |
| Helicopsyche | Larva - retreat | Merritt p. 311 fig. 17.20 |
| Helicopsyche | Larva - cased larva | Bouchard p. 118 fig. 10.03 |
| Helicopsyche | Larva - case | LaFontaine p. 230 - a |
| Helicopsyche | Larva - anal proleg lateral | Merritt p. 318 fig. 17.35 |
| Helicopsyche | Larva - anal proleg lateral | Bouchard p. 119 fig. 10.05 |
| Helicopsyche | Imago - lateral view | LaFontaine p. 230 - b |
| Helicopsyche | Imago - head, pro & mesonotum dorsal | Merritt p. 337 fig. 17.145 |
| Helicopsyche | Adult - lateral | Pobst - p. 36-a |
| Helicopsyche | Pupa - abdomen dorsal | Merritt p. 328 fig. 17.87 |
| Helicopsyche borealis | Imago - lateral view | LaFontaine p. 64 CP III - b |
| Helicopsyche borealis | Larva - larva | McCafferty p. CP XIII fig. 094 |
| Helicopsyche borealis | Pupa - pupa | Schwiebert p. 86b-8 |
| Helicopsychidae | Imago - head & throax | McCafferty p. 268 fig. 14.83 |
| Helicopsychidae | Imago - hind wing | McCafferty p. 268 fig. 14.82 |
| Helius | Larva - larva | Schwiebert p.102-2 |
| Helobata | Imago - dorsal view | Merritt p. 437 fig. 20.164 |
| Helochares | Larva - dorsal view | Merritt p. 430 fig. 20.124 |
| Helochares | Larva - clypeus | Merritt p. 430 fig. 20.125 |
| Helocombus | Imago - mesosternum | Merritt p. 437 fig. 20.165 |
| Helophorinae | Imago - head | McCafferty p. 223 fig. 13.29 |
| Helophorus | Imago - dorsal view | Merritt p. 433 fig. 20.143 |
| Helophorus | Larva - dorsal view | Merritt p. 430 fig. 20.110 |
| Helopicus nalatus | Larva - head & pronotum dorsal | Merritt p. 238 fig. 14.93 |
| Hemerodromia | Larva - lateral view | Bouchard p. 178 fig. 13.77 |
| Hemerodromia | Larva - abdomen dorsolateral | McCafferty p. 320 fig. 16.71 |
| Hemerodromia | Pupa - pupa | McCafferty p. 320 fig. 16.77 |
| Heptagenia | Imago - hind tibia & tarsus | Merritt p. 149 fig. 11.124 |
| Heptagenia | Larva - nymph | Swisher p. 164 |
| Heptagenia | Larva - nymph | Knopp p. 174 Plate 1b |
| Heptagenia | Larva - gill | Knopp p. 151 |
| Heptagenia | Larva - claw | Merritt p. 138 fig. 11.61 |
| Heptagenia | Imago - fore wing | McClane p. 602 |
| Heptagenia diabasia | Larva - abdomen | Arbona p. 160 fig. 91 |
| Heptagenia dolosa | Imago - male genitalia | Needham p. 350 c |
| Heptagenia elegantula | Larva - nymph | Schwiebert p.278a-14 |
| Heptagenia elegantula | Imago - male genitalia | Needham p. 345 b |
| Heptagenia elegantula | Larva - abdomen | Arbona p. 160 fig. 92 |
| Heptagenia elegantula | Larva - abdomen | Knopp p. 152 |
| Heptagenia elegantula | Larva - nymph | Arbona p. 072 fig. 6-20 |
| Heptagenia elegantula | Imago - genitalia | Arbona p. 177 fig. 55 |
| Heptagenia flavescens | Imago - male genitalia | Berner - p. 65 fig. 56 |
| Heptagenia flavescens | Imago - male genitalia | Needham p. 345 d |
| Heptagenia flavescens | Larva - 7th gill | Berner - p. 82 fig. 164 |
| Heptagenia flavescens | Egg | Needham p. 68 fig. 11 |
| Heptagenia marginalis | Imago - male genitalia | Needham p. 345 c |
| Heptagenia marginalis | Egg | Needham p. 68 fig. 9 |
| Heptagenia pulla | Larva - nymph | Schwiebert p.278a-1 |
| Heptagenia pulla | Imago - male genitalia | Needham p. 345 a |
| Heptagenia pulla | Imago - genitalia | Leonard p. 132 fig. 82 |
| Heptagenia pulla | Egg | Needham p. 68 fig. 13 |
| Heptagenia pulla | Imago - fore and hind wings | Leonard p. 115 fig. 69 |
| Heptagenia solitaria | Larva - abdomen | Arbona p. 160 fig. 93 |
| Heptagenia townesi | Imago - male genitalia | Needham p. 350 a |
| Heptageniidae (Heptageniinae) | Larva - gill 3 | McCafferty p. 109 fig. 07.24 |
| Heptageniidae (Heptageniinae) | Larva - head | McCafferty p. 109 fig. 07.23 |
| Hesperocorixa | Imago - left hemelytron | Merritt p. 276 fig. 15.32 |
| Hesperocorixa | Imago - head lateral view | Merritt p. 272 fig. 15.15 |
| Hesperocorixa vulgaris | Imago - dorsal view | Merritt p. 276 fig. 15.30 |
| Hesperoperla pacifica | Larva - head | Merritt p. 230 fig. 14.54 |
| Hesperoperla pacifica (Acroneuria pacifica) | Larva - nymph | Schwiebert p. 86a fig. 2 |
| Hesperophylax | Larva - metanotum dorsal view | Merritt p. 375 fig. 18.195 |
| Hesperophylax | Larva - hind femur lateral | Merritt p. 375 fig. 18.190 |
| Hesperophylax | larva - cased lateral | Pobst - p. 48-b |
| Hesperophylax | Imago - lateral view & case | LaFontaine p. 262 - 1 |
| Hesperophylax | Adult - lateral | Pobst - p. 48-a |
| Hesperophylax | Imago - lateral view | LaFontaine p. 271 - b |
| Hesperophylax | Larva - case | LaFontaine p. 271 - a |
| Hesperophylax designatus | Larva - cased larva | Bouchard p. 118 fig. 10.02 |
| Hesperophylax designatus | Larva - lateral view | Bouchard p. 130 fig. 10.55 |
| Hetaerina | Imago - fore wing | McCafferty p. 132 fig. 08.06 |
| Hetaerina americana | Larva - nymph | Schwiebert p.150b-6 |
| Hetaerina americana | Larva - larva | McCafferty p. CP V fig. 024 |
| Hetaerina americana | Imago - adult male | McCafferty p. CP V fig. 025 |
| Heterelmis | Imago - dorsal view | Merritt p. 456 fig. 20.288 |
| Heterelmis | Larva - abdominal segment dorsal | Merritt p. 449 fig. 20.241 |
| Heterlimnius | Imago - dorsal view | Merritt p. 457 fig. 20.295 |
| Heterlimnius | Larva - lateral view | Merritt p. 451 fig. 20.260 |
| Heteroceridae | Larva - larva | McCafferty p. 349 fig. 17.14 |
| Heterocerus undatus (Dampfius undatus) | Imago - adult | McCafferty p. 349 fig. 17.13 |
| Heterocloeon curiosum | Imago - male genitalia | Needham p. 721 b |
| Heteroplectron | Imago - head, pro & mesonotum dorsal | Merritt p. 336 fig. 17.140 |
| Heteroplectron | Pupa - abdomen dorsal | Merritt p. 332 fig. 17.107 |
| Heteroplectron americanum | Larva - case | Merritt p. 354 fig. 18.26 |
| Heteroplectron americanum | Larva - pronotum dorsal view | Merritt p. 354 fig. 18.23 |
| Heteroplectron americanum | Larva - cased larva | McCafferty p. 269 fig. 14.84 |
| Heteroplectron americanum | Larva - gill | Merritt p. 354 fig. 18.25 |
| Hexacylloepus | Larva - last abd. segs. dorsal | Merritt p. 449 fig. 20.242 |
| Hexagenia | Imago - genitalia (male) | Merritt p. 155 fig. 11.168 |
| Hexagenia | Imago - head anterior view | Merritt p. 155 fig. 11.167 |
| Hexagenia | Larva - distal segmant of labial palp | Berner - p. 74 fig. 92 |
| Hexagenia | Larva - fore tibia | Berner - p. 78 fig. 147 |
| Hexagenia | Larva - hind leg | Merritt p. 131 fig. 11.11 |
| Hexagenia | Larva - frontal process | McCafferty p. 116 fig. 07.49 |
| Hexagenia atrocaudata | Larva - abdomen | Arbona p. 159 fig. 62a |
| Hexagenia atrocaudata | Larva - nymph | Schwiebert p.182a-3 |
| Hexagenia atrocaudata | Larva - head | Arbona p. 159 fig. 62 |
| Hexagenia atrocaudata | Imago - genitalia | Leonard p. 124 fig. 74 |
| Hexagenia atrocaudata | Egg | Needham p. 68 fig. 6 |
| Hexagenia atrocaudata | Larva - head | Knopp p. 120 |
| Hexagenia atrocaudata | Imago - male genitalia | Needham p. 259 e |
| Hexagenia bilineata | Larva - nymph | Schwiebert p.182a-4 |
| Hexagenia bilineata | Larva - tarsal claw | Arbona p. 159 fig. 66 |
| Hexagenia bilineata | Larva - hind tarsal claw | Berner - p. 78 fig. 151 |
| Hexagenia bilineata | Imago - male genitalia | Needham p. 259 a |
| Hexagenia bilineata | Imago - male genitalia | Berner - p. 65 fig. 46 |
| Hexagenia bilineata | Egg | Needham p. 68 fig. 5 |
| Hexagenia limbata | Subimago - female lateral view | Fauceglia p. 130 |
| Hexagenia limbata | Larva - nymph | Swisher p. 170 |
| Hexagenia limbata | Larva - nymph | Arbona p. 022 fig. 3-5 |
| Hexagenia limbata | Larva - nymph | Caucci p. 256+ CP XV f |
| Hexagenia limbata | Larva - nymph | Knopp p. 115 |
| Hexagenia limbata | Larva - leg | Knopp p. 115 |
| Hexagenia limbata | Larva - nymph | Leonard p. 31 fig. 16 |
| Hexagenia limbata | Larva - nymph | Schwiebert p.182b-2 |
| Hexagenia limbata | Larva - nymph | Arbona p. 022 fig. 3-4 |
| Hexagenia limbata | Larva - tarsal claw | Arbona p. 159 fig. 65 |
| Hexagenia limbata | Subimago - dun | Knopp p. 174 Plate 2d |
| Hexagenia limbata | Subimago - dun | Swisher p. 122-CP-5d |
| Hexagenia limbata | Subimago - female dun | Caucci p. 256+ CP XVII e |
| Hexagenia limbata | Subimago - male dun | Caucci p. 256+ CP XVII f |
| Hexagenia limbata | Subimago - male lateral view | Fauceglia p. 129 |
| Hexagenia limbata | Subimago - male subimago | McCafferty p. CP III fig. 014 |
| Hexagenia limbata | Imago - genitalia | Arbona p. 175 fig. 40 |
| Hexagenia limbata | Larva - larva | McCafferty p. CP III fig. 013 |
| Hexagenia limbata | Imago - male genitalia | Berner - p. 65 fig. 47 |
| Hexagenia limbata | Imago - female lateral view | Fauceglia p. 132 |
| Hexagenia limbata | Imago - female spinner | Caucci p. 256+ CP XVIII a |
| Hexagenia limbata | Imago - fore wing | Knopp p. 117 |
| Hexagenia limbata | Larva - hind tarsal claw | Berner - p. 78 fig. 152 |
| Hexagenia limbata | Imago - genitalia | Leonard p. 124 fig. 74 |
| Hexagenia limbata | Imago - male lateral view | Fauceglia p. 131 |
| Hexagenia limbata | Imago - male spinner | Caucci p. 256+ CP XVIII b |
| Hexagenia limbata | Larva - abdomen dorsal and ventral | Berner - p. 80 fig. 159 |
| Hexagenia limbata | Larva - head | Knopp p. 115 |
| Hexagenia limbata | Imago - hind wing | Knopp p. 117 |
| Hexagenia limbata | Larva - head & prothorax dorsal | Bouchard p. 50 fig. 4.7 |
| Hexagenia limbata | Larva - dorsal view | Berner - p. 280 plate 15 |
| Hexagenia limbata | Larva - gill | Knopp p. 115 |
| Hexagenia limbata | Larva - frontal process | Berner - p. 78 fig. 154 |
| Hexagenia limbata | Larva - frontal process | Arbona p. 159 fig. 64 |
| Hexagenia limbata | Larva - dorsal view | Fauceglia p. 128 |
| Hexagenia limbata | Larva - dorsal view | Bouchard p. 42 fig. 3.26 |
| Hexagenia limbata (Hexagenia carolina) | Larva - middle leg tarsal claw | Needham p. 198 fig. 64 A |
| Hexagenia limbata (Hexagenia carolina) | Larva - nymph | Schwiebert p.182a-1 |
| Hexagenia limbata (Hexagenia carolina) | Imago - male genitalia | Needham p. 259 d |
| Hexagenia limbata (Hexagenia elegans) | Egg | Needham p. 68 fig. 8 |
| Hexagenia limbata (Hexagenia marlicanda) | Larva - nymph | Schwiebert p.182a-2 |
| Hexagenia limbata (Hexagenia occulta) | Imago - male genitalia | Needham p. 259 c |
| Hexagenia orlando | Larva - mandible | Berner - p. 74 fig. 112 |
| Hexagenia orlando | Larva - abdomen dorsal and ventral | Berner - p. 80 fig. 160 |
| Hexagenia orlando | Imago - fore wing, male | Berner - p. 56 fig. 11 |
| Hexagenia orlando | Imago - hind wing, male | Berner - p. 60 fig. 37 |
| Hexagenia orlando | Imago - male genitalia | Berner - p. 65 fig. 45 |
| Hexagenia rigida | Imago - genitalia | Leonard p. 124 fig. 74 |
| Hexagenia rigida | Imago - male genitalia | Needham p. 259 b |
| Hexagenia rigida | Larva - head | Arbona p. 159 fig. 63 |
| Hexagenia rigida | Larva - head | Knopp p. 120 |
| Hexagenia rigida | Larva - nymph | Schwiebert p.182b-1 |
| Hexatoma | Larva - abdomen posterior | McCafferty p. 296 fig. 16.11 |
| Himalopsyche phryganea | Larva - thorax, ab1 & ab2 | Merritt p. 383 fig. 18.257 |
| Himalopsyche phryganea | Larva - lateral & ventral | LaFontaine p. 307 - 3a |
| Hirudinea | Ametabolous - dorsal view | Bouchard p. 16 fig. 2.25 |
| Hirudinea | Ametabolous - ventral view | Bouchard p. 17 fig. 2.32 |
| Homoeoneuria (Oligoneuria) | Imago - forewing vein Sc+R1 | McClane p. 602 |
| Homoeoneuria dolani | Imago - fore wing, male | Berner - p. 58 fig. 26 |
| Homoeoneuria dolani | Imago - male genitalia | Berner - p. 68 fig. 68 |
| Homoeoneuria dolani | Larva - foreleg | Berner - p. 78 fig. 144 |
| Homophylax | Larva - labrum dorsal | Merritt p. 324 fig. 17.66 |
| Homophylax | Larva - ab1 lateral | Merritt p. 369 fig. 18.151 |
| Homophylax | Larva - anal prolegs dorsal | Merritt p. 325 fig. 17.69 |
| Homophylax | Larva - anal prolegs ventral | Merritt p. 325 fig. 17.70 |
| Homophylax | Larva - case | Merritt p. 370 fig. 18.162 |
| Homophylax | Larva - head & thorax dorsal | Merritt p. 318 fig. 17.41 |
| Homoplectra | Larva - thorax dorsal | Merritt p. 318 fig. 17.38 |
| Homoplectra | Larva - middle leg lateral | Merritt p. 358 fig. 18.57 |
| Huleechius | Imago - gula, mentum, submentum ventral | Merritt p. 456 fig. 20.290 |
| Husseyella | Imago - middle tarsus lateral view | Merritt p. 290 fig. 15.143 |
| Hyalella azteca | Ametabolous - cephalothorax lateral | Bouchard p. 22 fig. 2.59 |
| Hyalella azteca | Ametabolous - lateral view | Bouchard p. 28 fig. 2.77 |
| Hyalella azteca (Hyalella americana) | Imago - adult | Schwiebert p.138 |
| Hydatophylax | Imago - lateral view | LaFontaine p. 266 - c |
| Hydatophylax | Larva - case | LaFontaine p. 266 - b |
| Hydatophylax | Larva - metanotum dorsal | Merritt p. 369 fig. 18.146 |
| Hydatophylax argus | Larva - ab9 lateral | Merritt p. 369 fig. 18.152 |
| Hydatophylax argus | Larva - case | Merritt p. 370 fig. 18.163 |
| Hydatophylax argus | Imago - lateral view | LaFontaine p. 64 CP III - d |
| Hydracarina | Ametabolous - dorsal view | Bouchard p. 12 fig. 2.7 |
| Hydraena | Imago - antenna | Merritt p. 437 fig. 20.170 |
| Hydraena | Larva - abdomen posterior | McCafferty p. 224 fig. 13.38 |
| Hydraena pennsylvanica | Imago - adult | McCafferty p. 224 fig. 13.36 |
| Hydraena pennsylvanica | Imago - adult | McCafferty p. 224 fig. 13.37 |
| Hydrellia | Larva - abdomen posterior dorsolateral | McCafferty p. 326 fig. 16.89 |
| Hydrobiomorpha | Imago - clypeus | Merritt p. 433 fig. 20.148 |
| Hydrobiomorpha | Imago - dorsal view | Bouchard p. 156 fig. 12.40 |
| Hydrobiomorpha | Imago - dorsal view | Merritt p. 433 fig. 20.147 |
| Hydrobiomorpha | Larva - clypeus | Merritt p. 431 fig. 20.137 |
| Hydrobius | Larva - dorsal view | Merritt p. 431 fig. 20.141 |
| Hydrobius | Larva - head dorsal | Merritt p. 431 fig. 20.142 |
| Hydrocanthus | Imago - fore leg | Merritt p. 428 fig. 20.106 |
| Hydrocanthus | Larva - dorsal view | Merritt p. 428 fig. 20.103 |
| Hydrocanthus | Larva - larva | McCafferty p. 218 fig. 13.21 |
| Hydrocanthus | Imago - dorsal view | Merritt p. 428 fig. 20.109 |
| Hydrocanthus iricolor | Imago - adult | McCafferty p. 218 fig. 13.20 |
| Hydrochara | Larva - dorsal view | Merritt p. 431 fig. 20.131 |
| Hydrochara | Larva - leg w/4 segments | Bouchard p. 146 fig. 12.9 |
| Hydrochara | Larva - leg w/1 tarsal claw | Bouchard p. 145 fig. 12.5 |
| Hydrochara | Larva - leg | Merritt p. 431 fig. 20.134 |
| Hydrochara | Larva - head dorsal | Merritt p. 431 fig. 20.132 |
| Hydrochara | Imago - ventral view | Merritt p. 433 fig. 20.150 |
| Hydrochara | Imago - ventral view | Bouchard p. 149 fig. 12.20 |
| Hydrochara | Imago - lateral view | Merritt p. 433 fig. 20.151 |
| Hydrochara | Imago - dorsal view | Merritt p. 433 fig. 20.149 |
| Hydrochara | Imago - antenna | Merritt p. 433 fig. 20.152 |
| Hydrochara | Larva - head ventral | Merritt p. 431 fig. 20.133 |
| Hydrochus | Imago - dorsal view | Merritt p. 433 fig. 20.145 |
| Hydrochus rugosus | Imago - adult | McCafferty p. 223 fig. 13.31 |
| Hydrometra | Imago - dorsal view | Merritt p. 283 fig. 15.94 |
| Hydrometra | Imago - head | McCafferty p. 184 fig. 10.22 |
| Hydrometra australis | Imago - dorsal view | Merritt p. 283 fig. 15.93 |
| Hydrometra martini | Imago - adult | McCafferty p. CP IX fig. 052 |
| Hydrometra martini | Imago - dorsal view | Bouchard p. 95 fig. 7.26 |
| Hydrophiliade | Imago - antenna | Bouchard p. 149 fig. 12.21 |
| Hydrophilus | Imago - prosternal process | Merritt p. 435 fig. 20.153 |
| Hydrophilus | Larva - head dorsal | Merritt p. 431 fig. 20.130 |
| Hydrophilus triangularis | Imago - adult | McCafferty p. 223 fig. 13.32 |
| Hydroporinae | Imago - thorax | McCafferty p. 217 fig. 13.12 |
| Hydroporus | Imago - fore leg tarsus | Merritt p. 421 fig. 20.076 |
| Hydroporus | Larva - frontal projection dorsal | Merritt p. 420 fig. 20.067 |
| Hydroporus niger | Larva - dorsal view | Bouchard p. 152 fig. 12.28 |
| Hydropsyche | Larva - larva | McCafferty p. 250 fig. 14.14 |
| Hydropsyche | Pupa - dorso-lateral | Pobst - p. 28-b |
| Hydropsyche | Pupa - case | Pobst - p. 29-b |
| Hydropsyche | Imago - head, pro & mesonotum dorsal | Merritt p. 337 fig. 17.152 |
| Hydropsyche | Pupa - abdomen dorsal | Merritt p. 331 fig. 17.104 |
| Hydropsyche | Larva - retreat | Merritt p. 311 fig. 17.04 |
| Hydropsyche | Larva - lateral view | Merritt p. 318 fig. 17.39 |
| Hydropsyche | larva - lateral | Pobst - p. 27-b |
| Hydropsyche | Imago - head & throax | McCafferty p. 250 fig. 14.19 |
| Hydropsyche | Imago - lateral view | LaFontaine p. 236 - b |
| Hydropsyche | Adult - lateral | Pobst - p. 27-a |
| Hydropsyche | Adult - lateral | Pobst - p. 26-b |
| Hydropsyche | Larva - case | LaFontaine p. 236 - a |
| Hydropsyche betteni | Larva - head dorsal | Merritt p. 358 fig. 18.63 |
| Hydropsyche betteni | Imago - lateral view | LaFontaine p. 238 |
| Hydropsyche betteni | Larva - ab8 tertum setation detail | Merritt p. 360 fig. 18.68 |
| Hydropsyche betteni | Larva - gill of ab4 lateral view | Merritt p. 357 fig. 18.48 |
| Hydropsyche betteni | Larva - head ventral | Merritt p. 357 fig. 18.44 |
| Hydropsyche betteni | Larva - prosternum ventral view | Merritt p. 360 fig. 18.66 |
| Hydropsyche betteni | Larva - ab8 ventral | Merritt p. 358 fig. 18.61 |
| Hydropsychidae | Pupa - abdomen dorsal | McCafferty p. 250 fig. 14.17 |
| Hydropsychidae | Imago - maxillary palp | McCafferty p. 250 fig. 14.18 |
| Hydropsychinae | Larva - abdomen lateral | McCafferty p. 251 fig. 14.22 |
| Hydropsychinae | Larva - head ventral | McCafferty p. 251 fig. 14.25 |
| Hydroptila | Larva - retreat | Merritt p. 311 fig. 17.22 |
| Hydroptila | Larva - case | LaFontaine p. 158 - a |
| Hydroptila | Larva - case | LaFontaine p. 243 - c |
| Hydroptila | Larva - end of abdomen lateral | Merritt p. 361 fig. 18.85 |
| Hydroptila | Larva - hind leg lateral | Merritt p. 361 fig. 18.79 |
| Hydroptila | Larva - metanotum lateral | Merritt p. 361 fig. 18.86 |
| Hydroptila | Imago - lateral view | LaFontaine p. 243 - d |
| Hydroptila hamata | Larva - larva | McCafferty p. CP XII fig. 084 |
| Hydroptila hamata | Imago - adult | McCafferty p. CP XII fig. 085 |
| Hydroptila rono | Pupa - pupa | Schwiebert p. 97 |
| Hydroptilidae | Imago - fore wing | McCafferty p. 256 fig. 14.40 |
| Hydroscapha | Imago - antenna | Merritt p. 407 fig. 20.028 |
| Hydroscapha | Imago - abdomen & mesothorax ventral | Merritt p. 407 fig. 20.025 |
| Hydroscapha | Imago - dorsal view | Merritt p. 407 fig. 20.026 |
| Hydroscapha | Larva - dorsal view | Merritt p. 406 fig. 20.016 |
| Hydroscapha | Imago - lateral view | Merritt p. 407 fig. 20.027 |
| Hydroscapha natans | Larva - larva | McCafferty p. 220 fig. 13.26 |
| Hydrothassa | Imago - suctellum & elytra | Merritt p. 459 fig. 20.306 |
| Hydrovatus | Imago - hind coxal processes region | Merritt p. 424 fig. 20.084 |
| Hydrovatus | Imago - hind coxal processes region | Merritt p. 424 fig. 20.083 |
| Hydrovatus | Imago - hind coxal processes region | Merritt p. 424 fig. 20.082 |
| Hygrobatoidea | Imago - adult dorsal | McCafferty p. 399 fig. 23.03 |
| Hygrotus | Imago - epipleuron ventrolateral view | Merritt p. 424 fig. 20.089 |