| Taxon |
Description |
| Radotanypus |
A
genus within the Midges family of (aquatic) True Flies |
| Ranatra |
A
genus within the Water Scorpion family of Waterbugs |
| Reomyia |
A
genus within the Midges family of (aquatic) True Flies |
| Rhabdomastix |
A
genus within the Crane Flies family of (aquatic) True Flies |
| Rhagovelia |
A
genus within the Shortlegged Water Strider family of Waterbugs |
| Rhantus |
A
genus within the Predaceous Diving Beetle family of (aquatic) Beetles |
| Rheocricotopus |
A
genus within the Midges family of (aquatic) True Flies |
| Rheopelopia |
A
genus within the Midges family of (aquatic) True Flies |
| Rheosmittia |
A
genus within the Midges family of (aquatic) True Flies |
| Rheotanytarsus |
A
genus within the Midges family of (aquatic) True Flies |
| Rhithrogena |
A
genus within the Flatheaded family of Mayflies |
| Rhizelmis |
A
genus within the Riffle Beetle family of (aquatic) Beetles |
| Rhyacophila |
A
genus within the Freeliving (no case) family of Caddisflies |
| Rhyacophilidae |
The
Freeliving (no case) family of Caddisflies |
| Rickera |
A
genus within the Perlodid family of Stoneflies |
| Robackia |
A
genus within the Midges family of (aquatic) True Flies |
| Rossiana |
A
genus within the Rossianid case maker family of Caddisflies |
| Rossianidae |
The
Rossianid case maker family of Caddisflies |