Body usually broad and ovoid; antennae usually 5-segmented (Fig. 73.1) (some species with 4 segments); scutellum large, usually triangular or subtriangular, frena present (Fig. 73.1); claval commissure reduced or absent; mesosternum usually lacking a median carina; tarsi 3-segmented (2-segmented in Cyrtocorinae); spiracles of abdominal segment 2 concealed by metapleura except in a few genera of large body size; abdominal trichobothria arranged transversely behind spiracles on spiracular line; nymphal dorsal abdominal scent glands paired between terga 3--4, 4--5, 5--6; genital capsule as in Figs. 73.2A, B; aedeagus as in Figs. 73.2C--E; parameres as in Figs. 73.2G, H; ejaculatory reservoir (Fig. 73.2F) fixed in phallotheca; spermatheca 2-flanged with a well developed pump (Fig. 73.2I); ovipositor generally platelike, never truly laciniate; eggs barrel shaped with a detachable cap (pseudoperculum).