The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
Option 1 | Option 2 |
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Ventroapical tibial spurs small and arranged in one or two rows (sf 16.188) | Two slightly enlarged ventroapical spurs occur on each tibia, each surrounded by subapical membraneous area (sf 16.190) |
Metathoracic sternacostal sutures, if present, arise from posterior corners of furcal pits | Sternacostal sutures extend laterad of anterior corners of metathoracic furcal pits, often to margins of basisternum (sf 16.191), or sutures incomplete near furcal pits (sf 16.192) |
Posterolateral angles of metasterna usually project behind coxae (sf 16.189) | Posterolateral angles of metasternum not projecting (sf 16.192) |
Two ocelli | Two or three ocelli |
Remaining families: Chloroperlidae, Perlidae, Perlodidae, and Pteronarcyidae | |
2 Example Specimens | 5 Example Specimens |
Peltoperlidae | Go to Couplet 6 |