Triaenogryllacris, Karny, 1937

Cadena-Castañeda, Oscar J., Díaz, Carlos Julio Arango, Guez, Nixon Oscar Parra Rodrí- & García, Alexander García, 2020, Studies on raspy crickets: New Triaenogryllacris species (Orthoptera: Gryllacrididae), Zootaxa 4896 (2), pp. 239-250 : 242

Key to known Triaenogryllacris species

1. Head completely black ( Fig. 1B , 6A ), subgenital plate of the known males with three distal processes ( Fig. 1D , 5F )....... 2

– Reddish-brown head ( Fig. 4D ), male subgenital plate with two distal processes ( Fig. 5 D-E)............... T. diaena n. sp.

2. Ocellar spot red or pink ( Fig. 1B , 2B , 3B ); variably colored legs, but never with black spots on the legs ( Fig. 1A , 2A , 3A )................................................................................... T. triaena ( Karny, 1929)

– Ocellar spot whitish ( Fig. 6A ); coloration of the legs pink; the apex of all femora and base of all tibiae black ( Fig. 6A, D ).................................................................................... T. horaciotrianai n. sp.

Figures

FIGURE 1. Triaenogryllacris triaena. Male holotype (yellowish form). A. Habitus in dorsal view. B. Frons. C-D. Terminalia in lateral and ventral views respectively. Photos: M. Paris (MNCN).

FIGURE 2. Triaenogryllacris triaena, male pink form alive. A-B. Lateral and frontal views respectively. Photos: J.J. Caicedo.

FIGURE 3. Triaenogryllacris triaena, male green form alive. A-B. Lateral and frontal views respectively. Photos: L.M. Constantino.

FIGURE 4. Triaenogryllacris diaena n.sp. A-B. Habitus in lateral and dorsal views respectively. C. Head and thorax in lateral view. D. Frons.

FIGURE 5. Triaenogryllacris species, male terminalia. A-E. Triaenogryllacris diaena n. sp. F. Triaenogryllacris triaena. A-B. Terminalia in axial view, photo and draw respectively. C-D. Terminalia in lateral and ventral view. E-F. Subgenital plate.

FIGURE 6. Triaenogryllacris horaciotrianai n. sp. female. A. Frons. B-C. Head and thorax in lateral and dorsal view respectively. D-E. Terminalia in lateral and ventral view. F. Ovipositor apex.