Trigonopterus bawangensis 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 : 16

Taxon classification Animalia Coleoptera Curculionidae

14. Trigonopterus bawangensis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 14a). Length 2.38 mm. Color ferruginous, pronotum dark ferruginous, almost black. Body in dorsal aspect subrhomboid, with weak constriction between pronotum and elytron; in profile dorsally convex. Rostrum with median and pair of indistinct submedian ridges; coarsely punctate-reticulate, with sparse rows of suberect scales; in front of forehead median ridge swollen, projecting subangularly from profile; epistome with subangulate ridge. Pronotum with disk densely punctate; interspaces subglabrous, weakly microreticulate; each puncture containing small recumbent seta. Elytra with striae distinct, marked by coarse punctures; intervals flat, microreticulate; sutural intervals with row of smaller punctures; each puncture containing recumbent seta; elytral apex subtruncate, in apical aspect ventral outline bisinuate. Anteroventral ridge of femora indistinct, 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 subglabrous, with few long erect narrow scales, laterally with swollen rim; abdominal ventrite 2 in profile projecting dentiform; abdominal ventrite 5 flat, coarsely punctate, with sparse suberect scales. Penis (Fig. 14b) with sides of body subparallel, near middle with shallow constriction; apex subtruncate, without setae; transfer apparatus complex, wider than long; apodemes 1.5 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 1.90-2.48 mm. Color of elytra light or dark ferruginous. Female rostrum dorsally medially subglabrous, sublaterally punctate-rugose; epistome simple.

Material examined.

Holotype (MZB): ARC2535 (EMBL # LM655872), W-Kalimantan Prov., Bengkayan, Suka-Bangun, Mt. Bawang, sample 1, N00°53.429', E109°22.230', 246 m, 10-XII-2011. Paratypes (MZB, SMNK, ZSM): W-Kalimantan Prov., Bengkayan, Suka-Bangun, Mt. Bawang: 3 exx, ARC2536 (EMBL # LM655873), same data as holotype; 3 exx, ARC2534 (EMBL # LM655871), sample 2, N00°53.514', E109°22.301', 275 m, 10-XII-2011; 3 exx, ARC2537 (EMBL # LM655874), sample 3, N00°53.621', E109°22.475', 400 m, 10-XII-2011; 3 exx, sample 6, N00°53.992', E109°22.502', 556 m, 11-XII-2011; 1 ex, ARC2546 (EMBL # LM655883), sample 8, N00°53.736', E109°22.316', 411 m, 11-XII-2011.

Distribution.

W-Kalimantan Prov. (Mt. Bawang). Elevation: 246-556 m.

Etymology.

This epithet is based on the type locality.

Notes.

Trigonopterus bawangensis Riedel, sp. n. was coded as " Trigonopterus sp. 364".