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 |
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Pronotal surface minutely pebbled, without short spines | Pronotal surface with numerous short spines |
Southwest | North, West |
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.
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Crenophylax Species Crenophylax sperryi No further information about this genus is available on Troutnut.com at this time. | Hesperophylax |