F I G U R E 4 in Phylogenetic placement and description of Ngaliadessus humphreysi gen. et sp. nov., Watts & Villastrigo (Coleoptera: Dytiscidae), a subterranean diving beetle from the Ngalia Basin in central Australia

F I G U R E 4 Line drawings of larva of Ngaliadessus humphreysi sp. nov.: (a) ventral view of head capsule; (b) dorsal surface of head capsule; (c) enlarged view of ventral surface of head capsule; (d) dorsal view of abdominal segment 8 and basal segment of urogomphi; small circle on segment 8 represents only visible pore.