Predatory-nymph
Guides
Dolania
American sand-burrowing mayfly
Dolania is a monotypic genus of mayflies containing a single species, Dolania americana. Adults exhibit the shortest known adult lifespan of any insect, completing mating and dying within approximately 30 minutes of emergence. Females die within 5 minutes after depositing eggs. The genus is notable for its highly specialized reproductive strategy involving large eggs and abbreviated adult life.
Doroneuria baumanni
Cascades Stonefly, cascades stone
Doroneuria baumanni, known as the Cascades Stonefly, is a species of common stonefly in the family Perlidae. It was described by Stark & Gaufin in 1974. The species occurs in western North America, with documented records from British Columbia, Washington, Oregon, California, and Nevada. Like other Perlidae, it is predatory in its aquatic nymph stage.
Isonychia
Slate Drakes, Brushlegged Mayflies
Isonychia is a genus of mayflies comprising over 30 described species, commonly known as Slate Drakes or brushlegged mayflies. The genus is the sole member of the family Isonychiidae. Nymphs are notable for possessing raptorial forelegs adapted for predation, a trait uncommon among mayflies. Some species exhibit habitat generalist ecology while others are specialized to intermittent streams.