Nothocyphon triangulum

Zwick, Peter, 2015, Australian Marsh Beetles (Coleoptera: Scirtidae). 7. Genus Nothocyphon, new genus, Zootaxa 3981 (3), pp. 301-359 : 344

Key to males of the triangulum -group

1 Trigonium very wide, triangular, with straight sides. The blunt basal corners conceal the base of the parameroids ( Fig. 112 )....................................................................................... N. triangulum n. sp.

1' Base of parameroids exposed, trigonium narrow, without basolateral corners, sides a little convex ( Fig. 114 ). N. radula n. sp.

Figures

FIGURES 112 – 114. Nothocyphon triangulum - group, males. N. triangulum, penis, tegmen and parameres in dorsoventral views: 112, ventral view, with contour of T 8 in the background; 113, dorsal view, with lobes of S 9. — N. radula, 114, penis, tegmen, parameres and S 9 in dorsal view. 112, 113 to the same scale.