Generic characters. 9 Head dorsal view Stenopoda guaranitica 10 Head dorsal view Gnathobleda toba 11 Head dorsal view Oncocephalus validispinis 12 Tibiae ventral view Oncocephalus validispinis 13 Head and pronotum dorsal view Diaditus latulus 14 Tibiae dorsal view Diaditus latulus 15 Head dorsal view Narvesus carolinensis 16 Tibiae dorsal view Narvesus carolinensis. (Ad pu: adpressed pubescence; Jug: juga).