Triarius, Jacoby, 1887

Clark, Shawn M. & Anderson, E. Russell, 2019, A Review of Triarius Jacoby, 1887 (Coleoptera: Chrysomelidae: Galerucinae: Luperini), with Descriptions of a New Genus and Four New Species, The Coleopterists Bulletin 73 (2), pp. 343-357 : 350

KEY TO THE KNOWN SPECIES OF TRIARIUS

1. Tarsal claws bifid, inner lobe of each claw sharply pointed and forming angle less than 45° ................................................... 2

1´. Tarsal claws appendiculate, inner lobe of each claw blunt and forming angle greater than 45° .................................................... 6

2. Elytra uniformly colored or with contrasting color limited to the sutural and lateral areas, without stripe extending from humerus to base of distal declivity ................................. 3

2´. Elytra with stripe extending from humerus to base of distal declivity .......................... 4

3. Prothorax and elytra entirely black; gender male; aedeagus as in Fig. 3b ; habitus as in Fig. 2d ........................... Triarius nigroflavus Riley, Clark, and Gilbert

Figures

Fig. 3. Triarius species, aedeagi, dorsal and lateral views. A) T. pini, B) T. nigroflavus, C) T. melanolomatus, D) T. lividus, E) T. trivittatus, F) T. texanus, G) T. novoleonis.

Fig. 2. Triarius species, dorsal habitus. A) T. pini, male, B) T. pini, female, C) T. trivittatus, D) T. nigroflavus, male, E) T. nigroflavus, female, F) T. melanolomatus, G) T. lividus, H) T. texanus, I) T. novoleonis.