Figures 253–258. Vatellus pilacaudus. 253–256 in Revision of the New World and south-east Asian Vatellini (Coleoptera: Dytiscidae: Hydroporinae) and phylogenetic analysis of the tribe

Figures 253–258. Vatellus pilacaudus. 253–256, male genitalia; 253, right lateral lobe, lateral aspect; 254, apex of median lobe, ventral aspect; 255, median lobe, right lateral aspect; 256, median lobe, ventral aspect; 257–258, female genitalia; 257, ventral aspect; 258, spermatheca and associated structures, dorsal aspect.