ABSTRACT
Pronotum variable, quadrate, oval, or elongate; borders margined only in Prioninae; surface variable; pleural region broad; prosternum long in front of coxae, with broad prosternal process; procoxal cavities closed behind. Mesosternum short. Metasternum moderate or long. Legs with trochantins hidden in most; procoxae globular, separate; mesocoxae round, flat, separate; metacoxae transverse, somewhat separate; trochanters moderate, triangular; femora of most somewhat swollen; tibiae slender, apical spurs present in most, moderate; tarsal formula 5-5-5, most
apparently 4-4-4 because of minute fourth tarsomere in cleft of bilobed third tarsomere, but may be distinctly 5-5-5; claws of most simple, a few with appendiculate or cleft claws. Scutellum moderate, most triangular. Elytra entire, but may be very short, exposing most or all of abdomen; surface smooth, punctate, or rugose, some are striate; epipleural fold distinct, entire, or absent beyond basal third. Wing venation with anal area more or less normal; folding pattern very similar to Erotylidae and related families; some are apterous.
