Terraplistes ingrischi Tan, Dawwrueng & Artchawakom

Tan, Ming Kai, Dawwrueng, Pattarawich & Artchawakom, Taksin, 2015, Contribution to the taxonomy of scaly crickets (Orthoptera: Mogoplistidae: Mogoplistinae) from Southeast Asia, Zootaxa 4032 (4), pp. 381-394 : 391-392

Terraplistes ingrischi Tan, Dawwrueng & Artchawakom , new species

( Fig. 8 )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:471939

Material examined. Holotype (male): Thailand, Nakhon Ratchasima, Sakaerat Environmental Research Station, near light trap, dry evergreen forest, N14.50756, E101.92822, 408.9±5.0 m, 24 June 2014, 2231 hours, coll. M. K. Tan, H. Yeo & S. T. Toh ( SERS.14.48) ( ZRC).

Paratypes: same locality as holotype, 1 male ( SERS.14.18), main road, dry evergreen forest, N14.50755, E101.92823, 418.0±5.0 m, on leaf litter, 23 June 2014, 2321 hours, coll. coll. M. K. Tan, H. Yeo & S. T. Toh ( ZRC); 3 males (THNHM-I-2015-00157 – THNHM-I-2015-00159), 1 female (THNHM-I-2015-00160), beside main road, dry evergreen, under leaf litter, 400-450m a.s.l., 29 March 2015, coll. P. Dawwrueng, N. Makbun, P. Pawangkhanant & K. Yimyoo.

Diagnosis. This species differs from all known species of Terraplistes by: maxillary palps with apical, subapical and third segments completely black; first (basal) and second segments mostly black but distally white; male paraproct process with dorso-apical angle obtuse and ventro-apical angle more acute, very setose along apical margin.

Description (n = 5). Habitus as typical for the genus ( Fig. 8 A). Frontal rostrum about 3.3 times broader than scapus. Maxillary palps with apical (fifth) segment elongated, moderately widened and apex strongly oblique; fourth segment with apical part slightly widened, third segment cylindrical; apical segment longer than third and fourth segments ( Fig. 8 B). Pronotum in male about 1.3 times longer than wide; with anterior dorsal margin concave, lateral margins slightly narrowed anteriorly, and posterior dorsal margin broadly rounded, covering tegmen completely. Hind femur about 1.6 times longer than hind tibia; hind tibia 1.5 times longer than hind metatarsus.

Male. Last abdominal tergite and epiproct partly fused to a supra-anal plate; triangular, transverse at base and obtuse at apex; with a row of setae along margin ( Fig. 8 D). Cercus stout and fairly long. Subgenital plate broadly rounded. Paraproct process with club-like projection, separated from base by wide but shallow gap; projection fairly large, with dorso-apical angle obtuse and ventro-apical angle more acute, very setose along apical margin ( Fig. 8 E). Sclerotized structure in phallic complex absent.

Female. Supra-anal plate setose, apical margin rounded. Subgenital plate triangular, about as long as wide, apical margin concave ( Fig. 8 F). Ovipositor short, with apical valves narrow; dorsal valve slightly longer than ventral valve; dorsal valve and ventral valve with apex acute, ( Fig. 8 G).

Colouration. Generally black. Head black, eye brown; scapus and basal antennal segments black, antenna pale with black rings. Maxillary palps with apical, subapical and third segments completely black; first (basal) and second segments mostly black but distally white ( Fig. 8 B). Pronotum black ( Fig. 8 C). Mesosternum and metasternum black. Wing white ( Fig. 8 C). Legs, including tarsus, generally black. Hind femur with inner surface black; outer surface black with some brown scales. Hind tibia black. Abdominal tergites mostly black with scales along distal margins of tergites brown; abdominal sternites and subgenital plate black in male and dark brown in female. Cercus brown, more pale basally and darker apically ( Fig. 8 D). Ovipositor brown ( Fig. 8 G).

Measurements. See Table 4 .

Etymology. This species is named after Sigfrid Ingrisch, who has made immense contribution to the taxonomy of Mogoplistinae from Southeast Asia, including the erection of the genus Terraplistes .

Figures

FIGURE 8. Terraplistes ingrischi sp. n. male habitus in dorsal view (A); maxillary palps in lateral view (B); head and pronotum in lateral view (C); male abdominal apex in dorsal view (D); male paraproct process in lateral view (E); female subgenital plate (F); and female ovipositor (G). Scale bars: 5 mm (A), 1 mm (B – E).