| Taxon |
Description |
| Baetidae |
The
Small minnow family of Mayflies |
| Baetis |
A
genus within the Small minnow family of Mayflies |
| Baetisca |
A
genus within the Armored family of Mayflies |
| Baetiscidae |
The
Armored family of Mayflies |
| Baetodes |
A
genus within the Small minnow family of Mayflies |
| Banksiola |
A
genus within the Giant case maker family of Caddisflies |
| Basiaeschna |
A
genus within the Darner family of Dragonflies |
| Baumannella |
A
genus within the Perlodid family of Stoneflies |
| Behningiidae |
The
Tuskless burrower family of Mayflies |
| Beloneuria |
A
genus within the Common family of Stoneflies |
| Belonia |
A
genus within the Skimmer family of Dragonflies |
| Belostoma |
A
genus within the Giant Water Bug family of Waterbugs |
| Belostomatidae |
The
Giant Water Bug family of Waterbugs |
| Beraeidae |
The
Beraeid case maker family of Caddisflies |
| Berosus |
A
genus within the Water Scavenger Beetle family of (aquatic) Beetles |
| Bezzia |
A
genus within the Biting Midges (no-see-ums) family of (aquatic) True Flies |
| Bibiocephala |
A
genus within the Netwinged Midges family of (aquatic) True Flies |
| Bisancora |
A
genus within the Green family of Stoneflies |
| Bittacomorpha |
A
genus within the Phantom Crane Flies family of (aquatic) True Flies |
| Bittacomorphella |
A
genus within the Phantom Crane Flies family of (aquatic) True Flies |
| Blepharicera |
A
genus within the Netwinged Midges family of (aquatic) True Flies |
| Blephariceridae |
The
Netwinged Midges family of (aquatic) True Flies |
| Bolshecapnia |
A
genus within the Slender Winter family of Stoneflies |
| Boreochlus |
A
genus within the Midges family of (aquatic) True Flies |
| Boreoheptahyia |
A
genus within the Midges family of (aquatic) True Flies |
| Boyera |
A
genus within the Darner family of Dragonflies |
| Brachycentridae |
The
Humpless case maker family of Caddisflies |
| Brachycentrus |
A
genus within the Humpless case maker family of Caddisflies |
| Brachycercus |
A
genus within the Small squaregilled family of Mayflies |
| Brachymesia |
A
genus within the Skimmer family of Dragonflies |
| Brachyvatus |
A
genus within the Predaceous Diving Beetle family of (aquatic) Beetles |
| Brechmorhoga |
A
genus within the Skimmer family of Dragonflies |
| Brillia |
A
genus within the Midges family of (aquatic) True Flies |
| Brundiniella |
A
genus within the Midges family of (aquatic) True Flies |
| Brychius |
A
genus within the Crawling Water Beetle family of (aquatic) Beetles |
| Bryophaenocladius |
A
genus within the Midges family of (aquatic) True Flies |