Trigonopterus sumbawensis 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 : 80-81

Taxon classification Animalia Coleoptera Curculionidae

87. Trigonopterus sumbawensis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 87a). Length 1.76 mm. Color of antennae and tarsi ferruginous, elytra dark ferruginous, remainder black. Body in dorsal aspect with marked constriction between pronotum and elytron; with distinct constriction in profile. Rostrum with median ridge terminating at level of antennal insertion and pair of submedian ridges, coarsely punctate; epistome with transverse, subangulate ridge. Pronotum with indistinct subapical constriction; disk coarsely punctate-rugose, sparsely setose; in basal half with pair of sublateral, kidney-shaped impressions; with median ridge. Elytra with striae deeply impressed, each with row of short, suberect scales; intervals costate, subglabrous; apex rounded. Femora with small tooth; metafemur subapically with stridulatory patch. Abdominal ventrite 5 flat, coarsely punctate. Penis (Fig. 87b) with sides of body subparallel; in apical quarter with sides angularly projecting, abruptly converging to slightly extended apex, medially with sparse setae; transfer apparatus flagelliform, 2.9 × longer than body; apodemes 2.0 × as long as body. Intraspecific variation. Length 1.44-1.98 mm. Body relatively slender or rather roundish (in female ARC2343). Female rostrum dorsally subglabrous, sparsely punctate, with dorsolateral pair of furrows. Elytral intervals subglabrous or with transverse wrinkles. Elytral striae with rows of suberect scales or with rows of subrecumbent setae. Femora with tooth small or minute; profemur with or without tooth.

Material examined.

Holotype (MZB): ARC3609 (EMBL # LM656039), West Nusa Tenggara Prov., Sumbawa, Tepal, Pc. Nengas, sample 3, S08°35.386', E117°08.251', 1415 m, 15-IV-2010. Paratypes (MZB, SMNK, ZSM): Sumbawa: 2 exx, ARC3610 (EMBL # LM656040), ARC3611 (EMBL # LM656041), same data as holotype; 4 exx, ARC1533 (EMBL # LM655631), ARC2339 (EMBL # LM655789), ARC2341 (EMBL # LM655791), ARC2343 (EMBL # LM655793), Tepal, Pc. Nengas, sample 7, S08°35.176', E117°08.295', 1490 m, 16-IV-2010; 2 exx, ARC3606 (EMBL # LM656036), ARC3608 (EMBL # LM656038), Tepal, Pc. Nengas, sample 2, S08°35.884', E117°08.384', 1310 m, 15-IV-2010; 2 exx, ARC1516 (EMBL # LM655614), ARC1517(EMBL # LM655615), Batu Dulang, Mt. Batu Pasak, sample 2, S08°37.028', E117°15.783', 1305 m, 12-IV-2010; 3 exx, ARC3653 (EMBL # LM656071), ARC3654 (EMBL # LM656072), ARC3655 (EMBL # LM656073), Batu Dulang, Mt. Batu Pasak, sample 4, S08°37.318', E117°15.339', 1280 m, 18-IV-2010.

Distribution.

West Nusa Tenggara Prov., Sumbawa (Batu Dulang, Tepal). Elevation: 1280-1490 m.

Etymology.

This epithet is based on the island of Sumbawa.

Notes.

Trigonopterus sumbawensis Riedel, sp. n. was coded as " Trigonopterus sp. 326" by Tänzler et al. (2014).