Bioacoustics of Yungasacris

Key to species and subspecies of Yungasacris 1. Male tegmina broad in proximal half, with long stridulatory vein and rather wide mirror; male cerci long, with short basal part (proximal to base of inner branch), with short widened part (distal of base of inner branch), and with very long remaining part (this part narrow and longer than previous parts together...................................................... 2 Male tegmina clearly narrower in proximal half, with distinctly shorter stridulatory vein and narrower mirror; male cerci diverse in length, with clearly longer basal or middle (widened) parts, and narrow remaining part shorter................. 3 2. Pronotal disc with a pair of dark oblique posterior stripes reaching to middle; male cerci in lateral view with widened sub-basal part longer than the more distal part ( Fig. 23C ); male subgenital plate with short but well-developed styli and shallow emargination between them................................................................. Y. grata grata Rehn, 1950 Pronotal disc with a pair of dark oblique posterior stripes not reaching middle; male cerci in lateral view with widened subbasal part not longer than more distal part ( Fig. 23D ); male subgenital plate without distinct styli and with rather deep emargination......................................................................... Y. grata rara Gorochov, 2013 3. Pronotum without distinct traces of dark markings; male cerci with basal part (proximal to base of inner branch) shorter than widened middle part, with narrow distal part almost equal to middle part in length, and in lateral view with dorsal subbasal convexity ( Figs. 23E, F )............................................................ Y. peruviana Rehn, 1950 Pronotum with distinct dark marks; male cerci with basal part (proximal to base of inner branch) longer than widened middle part, with narrow distal part distinctly longer than middle part ( Fig. 23G ), and in profile without any dorsal convexity in subbasal part ( Fig. 23H ).............................................. Y. multa Cadena-Castañeda & Gorochov, 2013