| Taxon |
Description |
| Ecclisocosmoecus |
A
genus within the Northern case maker family of Caddisflies |
| Ecclisomyia |
A
genus within the Northern case maker family of Caddisflies |
| Einfeldia |
A
genus within the Midges family of (aquatic) True Flies |
| Elephantomyia |
A
genus within the Crane Flies family of (aquatic) True Flies |
| Elliptera |
A
genus within the Crane Flies family of (aquatic) True Flies |
| Elmidae |
The
Riffle Beetle family of (aquatic) Beetles |
| Elmis |
A
genus within the Riffle Beetle family of (aquatic) Beetles |
| Elodes |
A
genus within the Marsh Beetle family of (aquatic) Beetles |
| Empididae |
The
Aquatic Dance Flies family of (aquatic) True Flies |
| Enallagma |
A
genus within the Narrowwinged family of Damselflies |
| Endochironomus |
A
genus within the Midges family of (aquatic) True Flies |
| Enochrus |
A
genus within the Water Scavenger Beetle family of (aquatic) Beetles |
| Eobrachycentrus |
A
genus within the Humpless case maker family of Caddisflies |
| Eocosmoecus |
A
genus within the Northern case maker family of Caddisflies |
| Epeorus |
A
genus within the Flatheaded family of Mayflies |
| Ephemera |
A
genus within the Common burrower family of Mayflies |
| Ephemerella |
A
genus within the Spiny crawler family of Mayflies |
| Ephemerellidae |
The
Spiny crawler family of Mayflies |
| Ephemeridae |
The
Common burrower family of Mayflies |
| Ephemeroptera |
The
order of Mayflies within Old-winged Insects |
| Ephoron |
A
genus within the Pale burrower family of Mayflies |
| Ephydridae |
The
Shore Flies family of (aquatic) True Flies |
| Epiaeschna |
A
genus within the Darner family of Dragonflies |
| Epitheca |
A
genus within the Emerald family of Dragonflies |
| Erestes |
A
genus within the Predaceous Diving Beetle family of (aquatic) Beetles |
| Erioptera |
A
genus within the Crane Flies family of (aquatic) True Flies |
| Erpetogomphus |
A
genus within the Clubtail family of Dragonflies |
| Erythemis |
A
genus within the Skimmer family of Dragonflies |
| Erythrodiplax |
A
genus within the Skimmer family of Dragonflies |
| Eubrianax |
A
genus within the Water Penny Beetle family of (aquatic) Beetles |
| Eucapnopsis |
A
genus within the Spring Stoneflies family of Stoneflies |
| Euholognatha |
The
Winter and Spring suborder of Stoneflies |
| Eukiefferiella |
A
genus within the Midges family of (aquatic) True Flies |
| Euparyphus |
A
genus within the Aquatic Soldier Flies family of (aquatic) True Flies |
| Euryhapsis |
A
genus within the Midges family of (aquatic) True Flies |
| Eurylophella |
A
genus within the Spiny crawler family of Mayflies |