Figure 15-21 in Monographic revision of the genus Aegidinus Arrow (1904) and generic phylogeny of the world Orphninae (Coleoptera: Scarabaeidae: Orphninae).

Figure 15-21. Scale bar = 1 mm. 15) Prefemoral cleaning brush composed of a line of setae (Madecorphnus sp.). 16) Prefemoral cleaning brush composed of a patch of setae (Aegidium sp.). 17) Prefemoral cleaning brush composed of a line and a patch of setae (Orphnus sp.). 18) Mesofemur without ridge along posterior edge (Aegidiellus alatus). 19) Mesofemur with ridge along posterior edge; surface posterior to ridge minutely roughened (Aegidium sp.). Arrow indicates position of ridge. 20) Ventral view of Brenskea coronata. a) Mesocoxae contiguous. b) Mesometasternum unsutured. 21) Ventral view of Orphnus sp. a) Mesocoxae separated. b) Meso- metasternum sutured.