#plecoptera

Agnetina, members of the family Perlidae (Order: Plecoptera), are very opportunistic feeders; consuming anything from mayflies, beetles, crustaceans, caddisflies, and even other stoneflies

Order: Plecoptera

Family: Perlidae

Genus: Agnetina

Chittenango Creek, NY

Peltoperla, one of the roachlike stoneflies, of the family Peltoperlidae and order Plecoptera. The Peltoperlids typically live in cool, small streams, and are very sensitive to environmental stressors. When Peltoperlids are present, they are often in high abundance. Up to 500 per square meter.

Plecoptera, Peltoperlidae, Peltoperla

Oswego County, NY

Prince Brook

The wingpads of Pteronarcys (Plecoptera, Pteronarcyidae). Pteronarcys are very sensitive to stress, and occur mostly in small-order streams in fast riffles. They also use autohaemorrhaging to ward off predators. Autohaemorrhaging, or reflex bleeding, is when an animal deliberately ejects blood (usually when the blood contains toxic compounds).

Plecoptera, Pteronarcyidae, Pteronarcys. Prince Brook, Oswego County, NY.

The abdominal segments of a Pteronarcys (Plecoptera, Pteronarcyidae). Pteronarcys are very sensitive to stress, and occur mostly in small-order streams in fast riffles. They also use autohaemorrhaging to ward off predators. Autohaemorrhaging, or reflex bleeding, is when an animal deliberately ejects blood (usually when the blood contains toxic compounds).

Plecoptera, Pteronarcyidae, Pteronarcys. Prince Brook, Oswego County, NY.

The gills of a Pteronarcys (Plecoptera, Pteronarcyidae). Pteronarcys are very sensitive to stress, and occur mostly in small-order streams in fast riffles. They also use autohaemorrhaging to ward off predators. Autohaemorrhaging, or reflex bleeding, is when an animal deliberately ejects blood (usually when the blood contains toxic compounds).

Plecoptera, Pteronarcyidae, Pteronarcys. Prince Brook, Oswego County, NY.

The delicate antenna on an Acroneuria sp, a species of stonefly (Order: Plecoptera, Family: Perlidae).