Stilpnochlora jalisco Gorochov, 2025

Stilpnochlora jalisco Gorochov View in CoL sp. nov.

( Figs 153–159 View Figs 153–161 , 162–169 View Figs 162–172 )

Etymology. This species is named after the Jalisco State of Mexico where it was collected.

Material. Holotype – male, MEXICO: Jalisco State, Chamela Biostation (Mexico University) near Chamela Vill., 3–4 km from Pacific Ocean , 19 º 33' N, 105 º 5' W, dry forest on hills, at light, 23–28 November 2006, A. Gorochov, A. Ovtshinnikov ( ZIN) GoogleMaps . Paratype – female, same data as for holotype ( ZIN) GoogleMaps .

Description. Male (holotype). General appearance similar to that of S. quadrata (Scudder, 1869) sensu Emsley (1970) but with some characteristic features. Coloration almost uniformly greenish, but: with yellowish tinge on most part of head and pronotum (as in Fig. 153 View Figs 153–161 ) as well as on other thoracic parts and on abdomen; with whitish dorsum of upper rostral tubercle ( Fig. 155 View Figs 153–161 ); with light greyish brown apices of lower and upper rostral tubercles ( Fig. 154 View Figs 153–161 ); with brown thin rings on apex of scape as well as on base and apex of pedicel ( Figs 154, 155 View Figs 153–161 ); with narrow black line on pronotal disc along its posterior edge as well as along distal portions of lateral edges of this disc (this line interrupted in median part and barely widened in lateral portions, but latter portions with anterior parts gradually narrowing to middle part of this disc; Fig. 155 View Figs 153–161 ); with light brown antennal flagellum and distal part of middle tibia as well as dorsal surface of hind tibia (places of femorotibial articulations with very small light brown to brown marks) and stridulatory vein of left tegmen; with dark brown transverse vein at base of each tegminal dorsal field ( Figs 162–164 View Figs 162–172 ); with transparent membranes in stridulatory areas of right (lower) tegmen ( Fig. 163 View Figs 162–172 ) and in hind wings (except for apical part of these wings which very similar to that of tegmina in coloration); with yellowish rest venation of hind wing; and with somewhat darkened apical denticle of cercus ( Figs 165, 167 View Figs 162–172 ). Upper rostral tubercle slightly narrowed before roundly truncate apex, with narrowest part practically equal to scape in width, and with dorsal surface not inclined downwards and having thin median longitudinal groove (this groove not reaching apex of this tubercle; Fig. 155 View Figs 153–161 ); lower rostral tubercle smaller than previous tubercle as well as with distinctly narrower and more or less rounded apex directed upwards ( Fig. 154 View Figs 153–161 ); tegmina slightly shorter (wider) than in S. quadrata (they almost 2.8 times as long as wide in new species, but this ratio nearby 3.1 in S. quadrata ; compare Figs 158 and 160 View Figs 153–161 ), and with stridulatory apparatus as in Figs 162– 164 View Figs 162–172 (stridulatory vein of left tegmen almost 6.6 mm in length and with 19–20 ventral teeth in 1 mm in middle part of its length); outer and inner tympana as in Figs 156 and 157 View Figs 153–161 ; middle and hind tibiae barely widened proximally (approximately as in Fig. 153 View Figs 153–161 ); abdominal tergites with almost straight posterior edges; epiproct and paraprocts more or less triangular and lobe-like, respectively ( Fig. 165 View Figs 162–172 ); cerci moderately elongate, rather thick, cylindrical in proximal two thirds and slightly dorsoventrally flattened (with shallow dorsal concavity before apical part) in distal third, and with medially curved apical part having apex in shape of denticle with two small rounded projections directed upwards/medially ( Figs 165, 167 View Figs 162–172 ); genital plate somewhat longer than cerci, elongately triangular but with clear trapezoidal apical notch as well as a pair of rather small posterior projections around it (these projections with short but distinct styli; Fig. 166 View Figs 162–172 ).

Female. Coloration and structure of body as in male, but body somewhat larger, upper rostral tubercle dorsally yellowish, light median interruption in blackish line on pronotal disc slightly wider, transverse vein at base of dorsal tegminal field light brown to brown, tegmina wider (they almost 2.5 times as long as wide in female of new species, and this ratio about 2.8 in female of S. quadrata ; compare Figs 159 and 161 View Figs 153–161 ) and without well developed stridulatory apparatus, and abdomen typical of Stilpnochlora female: tergites without large distal lobules (i.e., as in male), epiproct and paraprocts also as in male, ovipositor and cerci as in Fig. 168 View Figs 162–172 , genital plate rather small and more or less triangular but somewhat compressed laterally and with widely rounded apex ( Fig. 169 View Figs 162–172 ).

Length in mm. Body: male 31, female 39; body with wings: male 73, female 84; pronotum: male 9, female 10.3; tegmina: male 58, female 67; hind femora: male 33, female 38; ovipositor 6.

Comparison. The new species from dry forests of Mexico is most similar to S. quadrata widely distributed in cloud forests of Mexico and Central America, but it is distinguished from the latter species by somewhat shorter (wider) tegmina in the both sexes, by a more arcuate stridulatory vein in the male left tegmen having less wide teeth in the medial portion (compare Figs 164 and 170 View Figs 162–172 ) as well as distinctly thicker male cerci (see Figs 165 and 171 View Figs 162–172 ) and a more rounded apex of the female genital plate (vs: this plate usually with almost truncated apex; for comparison see Figs 169 and 172 View Figs 162–172 ). The new species differs also from S. marginella sensu Emsley (1970) in the same characters and additionally in larger body size and a longer stridulatory vein of the male left tegmen (almost 6.6 mm instead about 5 mm); from S. couloniana (Saussure, 1861) sensu Emsley (1970) in the same tegminal characters (the male tegmen in S. jalisco sp. nov. is about 2.8 times as long as wide, but this ratio in S. couloniana is nearby 3.1, and the stridulatory vein length is almost 6.6 and 5.5 mm, respectively); from S. undulata Emsley, 1970 in the upper rostral tubercle directed more or less forwards but not distinctly forwards/downwards, a less arcuated stridulatory vein of the male left tegmen, and the lateral portions of the black pronotal mark gradually narrowing forwards (vs: slightly widening forwards and with obliquely truncated anterior parts); and from all other congeners in the following combination of characters: a more uniformly greenish coloration, the absence of any wrinkles (denticles) or projections (lobes) on the dorsolateral pronotal carinae, distinctly larger body size, a longer or shorter stridulatory vein of the male left tegmen, and a clearly wider distal third of the tegmina.