Trigonopterus singkawangensis Riedel

Riedel, Alexander, Taenzler, Rene, Balke, Michael, Rahmadi, Cahyo & Suhardjono, Yayuk R., 2014, Ninety-eight new species of Trigonopterus weevils from Sundaland and the Lesser Sunda Islands, ZooKeys 467, pp. 1-162 : 76

Taxon classification Animalia Coleoptera Curculionidae

82. Trigonopterus singkawangensis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 82a). Length 1.90 mm. Color ferruginous, pronotum almost black. Body in dorsal aspect subovate, with weak constriction between pronotum and elytron; in profile dorsally convex. Rostrum with median and pair of indistinct submedian ridges; chagreened, with sparse rows of subrecumbent scales; in front of forehead median ridge terminating, projecting from profile; epistome with subangulate ridge. Pronotum with disk densely punctate; interspaces subglabrous, microreticulate; each puncture containing small recumbent seta. Elytra with striae indistinct; punctuation almost confused, punctures small; intervals flat, microreticulate; elytral apex subtruncate. Anteroventral ridge of femora terminating in apical third. Metafemur subapically with stridulatory patch. Dorsal edge of tibiae with subbasal angulation, dentate in pro- and mesotibia. Abdominal ventrites 1-2 at middle concave, subglabrous, anteriorly with few long erect narrow scales, laterally with swollen rim; abdominal ventrite 2 posteriorly with transverse ridge, in profile projecting dentiform; abdominal ventrite 5 basally with transverse costa, at middle weakly concave, subglabrous, laterally punctate and with sparse suberect scales. Penis (Fig. 82b) with sides of body subparallel, near middle widened; apex subtruncate, sparsely setose; transfer apparatus complex, small; apodemes 1.3 × as long as body; ductus ejaculatorius without distinct bulbus. Intraspecific variation. Length 1.90-2.32 mm. Female rostrum dorsally subglabrous, with submedian rows of coarse punctures; epistome simple. Elytral punctuation almost confused or with distinct striae.

Material examined.

Holotype (MZB): ARC2547 (EMBL # LM655884), W-Kalimantan Prov., Singkawang, Mt. Poteng, sample 3, N00°51.211', E109°03.418', 651 m, 13-XII-2011. Paratypes (SMNK): 1 ex, ARC2548 (EMBL # LM655885), same data as holotype.

Distribution.

W-Kalimantan Prov. (Singkawang). Elevation: 651 m.

Etymology.

This epithet is based on the type locality.

Notes.

Trigonopterus singkawangensis Riedel, sp. n. was coded as " Trigonopterus sp. 367".