Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
Option 1 | Option 2 |
---|---|
Femora of middle and hind legs each with approximately 5 major setae along ventral edge (sf 19.326) | Femora of middle and usually hind legs each with 2 major setae along ventral edge (sf 19.327) |
Case curved, scarcely tapered, made of wood, bark, twigs, and leaves (sf 19.339, 19.509, 19.510) or of sand Central, East | |
Remaining genera: Crenophylax, Hesperophylax, Lenarchus, and Psychoronia | |
1 Example SpecimenBased on both range maps and key characteristics, this larva is either Hesperophylax designatus, Hesperophylax alaskensis, or Hesperophylax occidentalis. However, the species key in Parker & Wiggins (1985) cannot separate these species as larvae.
| |
Ironoquia | Go to Couplet 41 |