Key to the Genera of Ohio Capniidae Nymphs
1. Body (dorsal and ventral) and appendages densely clothed with long, stout bristles; (Fig. 1.1, Fig. 1.2) some AB bristles 0.5 times or more as long as their segment; cercal segments with at most one short dorsal and 2 ventral intercalary setae not forming a prominent vertical fringe (Fig. 1.3). Mesosternal Y-ridge with arms and transverse ridge enclosing narrow rectangular area about 0.5 times the intercoxal distance (Fig.1.4). Abdominal segmetns clothed with numerous long bristles. Only one species in Ohio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Paracapnia angulata
Bristles on body and appendages few or sort; Ab hairs or bristles less than 0.3 times as long as their segment; inner margin of hind wingpads unnotched or notched close to the tip, or hind wingpads sometimes much reduced or absent; right ventral mandibular tooth with deep basal serrations. There are 15 species in Ohio. . . . . . . . . . .Allocapnia
