Triaenogryllacris triaena ( Karny, 1929 )

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

Triaenogryllacris triaena ( Karny, 1929)

( Fig. 1-3 , 5F , Map. 1 )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:22109

Type material. Holotype. Ecuador ( MNCN) . Allotype. Colombia, Antioquia ( MNCN) .

Comments. This species was described in detail by Karny (1929), although, unfortunately, there are no data on the precise localities of the type specimens, so the distribution of this species is incomplete on Map 1 , since it can extend even farther south and to the north, in contrast to the records documented here.

In the distribution range, based on the observed specimens, three variations or color forms are differentiated ( Map 1 , see the color code on each locality): 1) The body is yellowish (except for the head, which will always be black in all color forms) and the median ocellus red, as observed in the holotype of Ecuador ( Fig. 1 ) and Colombian specimens from Circasia, Quindío department and Manizales, Caldas department. 2) The body is pink similar to the median ocellus. This color form was recorded at Cali-Dagua road in the Department of Valle del Cauca ( Fig. 2 ). 3) Pink medan ocellus, green legs, pronotum, and abdomen yellowish, with diffuse pink spots. This color form was observed in only one specimen from Chinchina, Caldas ( Fig. 3 ). It is currently unknown if these color forms are regional (although the yellowish form 1 is more widely distributed than the other two color forms) or are conditioned by the micro-habitat and food where the populations live.

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.

MAP 1. Triaenogryllacris distribution. Including the pink, yellow and green forms of T. triaena.

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.