Acroperla stonefly nymphs are relatively small, with a rosette of anal gills between the cerci (“tails”). They have pale spots on the legs and pale triangular markings along the top of the abdominal segments.
Acroperla nymphs are common in many streams with gravelly beds or abundant woody debris, in bush covered and farmland areas.
They are thought to be “collector-gatherers”, feeding on a range of organic matter accumulating on stream beds.
Acroperla nymphs are found in streams of moderate to good water quality and are not thought to be among the most “sensitive” stoneflies. They have tolerance values of 5 (hard bottom sites) and 5.1 (soft bottom sites).