| Taxon |
Description |
| Saetheria |
A
genus within the Midges family of (aquatic) True Flies |
| Sargus |
A
genus within the Aquatic Soldier Flies family of (aquatic) True Flies |
| Sciomyzidae |
The
Marsh Flies family of (aquatic) True Flies |
| Scirtes |
A
genus within the Marsh Beetle family of (aquatic) Beetles |
| Sergentia |
A
genus within the Midges family of (aquatic) True Flies |
| Sericostomatidae |
The
Bushtailed case maker family of Caddisflies |
| Serratella |
A
genus within the Spiny crawler family of Mayflies |
| Setisura |
The
Filter feeding suborder of Mayflies |
| Setvena |
A
genus within the Perlodid family of Stoneflies |
| Sialidae |
The
Alderflies family of Alderflies, Dobsonflies, Fishflies |
| Sialis |
A
genus within the Alderflies family of Alderflies, Dobsonflies, Fishflies |
| Sierraperla |
A
genus within the Roachlike family of Stoneflies |
| Sigara |
A
genus within the Water Boatman family of Waterbugs |
| Simuliidae |
The
Black Flies family of (aquatic) True Flies |
| Simulium |
A
genus within the Black Flies family of (aquatic) True Flies |
| Siphlonuridae |
The
Primitive minnow family of Mayflies |
| Siphlonurus |
A
genus within the Primitive minnow family of Mayflies |
| Siphloplecton |
A
genus within the Cleftfoot minnow family of Mayflies |
| Skwala |
A
genus within the Perlodid family of Stoneflies |
| Smittia |
A
genus within the Midges family of (aquatic) True Flies |
| Soliperla |
A
genus within the Roachlike family of Stoneflies |
| Somatochlora |
A
genus within the Emerald family of Dragonflies |
| Soyedina |
A
genus within the Spring Stoneflies family of Stoneflies |
| Sphaeriidae |
The
Minute Bog Beetle family of (aquatic) Beetles |
| Sphaerius |
A
genus within the Minute Bog Beetle family of (aquatic) Beetles |
| Stactobiella |
A
genus within the Purse case maker family of Caddisflies |
| Stempellina |
A
genus within the Midges family of (aquatic) True Flies |
| Stempellinella |
A
genus within the Midges family of (aquatic) True Flies |
| Stenacron |
A
genus within the Flatheaded family of Mayflies |
| Stenelmis |
A
genus within the Riffle Beetle family of (aquatic) Beetles |
| Stenochironomus |
A
genus within the Midges family of (aquatic) True Flies |
| Stenocolus |
A
genus within the Toed-Winged Beetle family of (aquatic) Beetles |
| Stenonema |
A
genus within the Flatheaded family of Mayflies |
| Stictochironomus |
A
genus within the Midges family of (aquatic) True Flies |
| Stictotarsus |
A
genus within the Predaceous Diving Beetle family of (aquatic) Beetles |
| Stilocladius |
A
genus within the Midges family of (aquatic) True Flies |
| Stratiomyidae |
The
Aquatic Soldier Flies family of (aquatic) True Flies |
| Stratiomys |
A
genus within the Aquatic Soldier Flies family of (aquatic) True Flies |
| Stylogomphus |
A
genus within the Clubtail family of Dragonflies |
| Stylurus |
A
genus within the Clubtail family of Dragonflies |
| Sublettea |
A
genus within the Midges family of (aquatic) True Flies |
| Suphisellus |
A
genus within the Burrowing Water Beetle family of (aquatic) Beetles |
| Suwallia |
A
genus within the Green family of Stoneflies |
| Sweltsa |
A
genus within the Green family of Stoneflies |
| Symbiocladius |
A
genus within the Midges family of (aquatic) True Flies |
| Sympetrum |
A
genus within the Skimmer family of Dragonflies |
| Symposiocladius |
A
genus within the Midges family of (aquatic) True Flies |
| Sympotthastia |
A
genus within the Midges family of (aquatic) True Flies |
| Syndiamesa |
A
genus within the Midges family of (aquatic) True Flies |
| Synorthocladius |
A
genus within the Midges family of (aquatic) True Flies |
| Syrphidae |
The
Rattailed Maggots family of (aquatic) True Flies |
| Systellognatha |
The
Summer suborder of Stoneflies |
| Systenus |
A
genus within the family of (aquatic) True Flies |