Reyesacris Fontana, Buzzetti & Mariño-Pérez, 2011

Mariño-Pérez, Ricardo, Sanabria-Urbán, Salomón, Pocco, Martina E., Foquet, Bert & Song, Hojun, 2021, Studies in Mexican Grasshoppers: Four new species of Reyesacris Fontana Buzzetti & Mariño-Pérez, 2011 (Orthoptera: Acrididae: Ommatolampidinae), Zootaxa 5039 (4), pp. 518-536 : 520-521

Reyesacris Fontana, Buzzetti & Mariño-Pérez, 2011

Reyesacris “in litt.” in footnote [nomen nudum], Descamps & Amédégnato. 1989a. Rev. fr. Ent. (N.S.) 11(1):17

Reyesacris “no species indicated”, Otte, D. 1995. Orthoptera Species File 5:87

Reyesacris, Fontana, Buzzetti & Mariño-Pérez. 2011 . Zootaxa 2862:40

Type species: Reyesacris amedegnatoae Fontana, Buzzetti & Mariño-Pérez , by monotypy and original designation

Fontana et al. (2011) provided a diagnosis and description of the genus Reyesacris , based on specimens belonging to a single species. After reviewing more specimens from R. amedegnatoae and the four new species herein described, we can concur in the following:

Diagnosis. Following combination of characters: micropterous; tegmina in the upper third light in coloration and dark in coloration in the lower two thirds; male cerci pointed at the tip, wider at the base with an internal spine in the basal half; male supra-anal plate triangular with dilated margins and dark knobs on surface; male subgenital plate small and rounded. Additional information to separate Reyesacris from other closely related genera is provided in Table 1.

Description. Body color black to dark brown to light brown. Lighter coloration in females. In males, two dorsal stripes lighter in coloration running from behind the eyes over the pronotum, ending at upper third of tegmina (less evident in females). Pronotum dark in coloration with the exception of the lower half of the lateral lobes (less marked in females) and the two aforementioned stripes dividing the pronotal disc from the lateral lobes (not that evident in females). Tegmina light in coloration in the upper third, darker in coloration in the lower two thirds (not that evident in females). Micropterous insects. Medium sized (males: 1.5–2.0 mm; females: 1.9–2.8 mm total length). Eyes globose and prominent, face of head slanted with fastigium extending beyond the eyes; pronotum rugulose with longitudinal median carina on dorsum, cut by two sulci, fore margin straight, hind margin emarginated; tegmina elongated with upper margin more or less straight and lower margin widely convex. Fore and mid tibiae with two rows of small spines on inner and outer margin of lower surface of distal half, hind tibiae with two rows of spines on upper surface, 5–7 spines in the outer row, 8–9 spines in the inner row.Abdominal tergites carinated in the middle. In females, the first abdominal segments are more expanded. Tympanum present. Male cerci pointed at the tip, wider at the base at with an internal spine in the basal half; male supra-anal plate triangular with dilated margins and dark knobs on surface; male subgenital plate small and rounded.

Geographic distribution. Currently, the genus Reyesacris is distributed between 382 and 1800 masl in the states of Guerrero and Oaxaca in Southern Mexico ( Figs. 11–12). These grasshoppers are commonly found in association with vegetation surrounding streams along the tropical rain forest and cloud forest. According to Morrone (2017, 2020), this distribution corresponds to Tehuanan District (areas below 1,000 masl in Oaxaca state) and Nayarit-Guerrero District (areas below 1,000 masl in Guerrero state). Both Districts are part of the Pacific Lowlands Province of the Neotropical Region. The areas above 1,000 masl belong to the Mexican Transition Zone, Sierra Madre del Sur Province, Eastern Sierra Madre del Sur Subprovince, Guerreran District (Guerrero State) and Oaxacan Highlands District ( Oaxaca State). Without doubts, more species of Reyesacris and even more closely related genera will be found in the Mexican Transition Zone. The great diversity of closely related genera occurs in South America. Only Vilerna pygmaea (Ommatolampidini) is also reported from Mexico ( Cadena-Castañeda & Cardona, 2015; Cardona, 2012, 2015, 2020; Cigliano et al., 2021; Descamps & Amédégnato, 1989a, b).