Trigonopterus dentipes 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 : 23-24

Taxon classification Animalia Coleoptera Curculionidae

23. Trigonopterus dentipes Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 23a). Length 3.84 mm. Color of antennae ferruginous; basal third of elytra and legs dark ferruginous; remainder black. Body in dorsal aspect with marked constriction between pronotum and elytron; in profile dorsally flat, apically convex. Rostrum with median and pair of submedian ridges; intervening furrows each with sparse row of erect piliform scales; epistome with transverse ridge forming submedian pair of small denticles. Pronotum with sides subparallel, rounded to indistinct subapical constriction; disk densely punctate, reticulate; with indistinct median ridge; with swelling in anterior half. Elytra with striae near base and apex distinct; intervals partly swollen or with coarse punctures each bearing small, suberect, cream-colored scale; transverse band at middle with indistinct striae, intervals subglabrous, sparsely punctate; apex subangulate. Anteroventral ridge of femora forming large tooth. Metafemur subapically with stridulatory patch. Dorsal edge of tibiae with subbasal angulation dentate. Abdominal ventrites 1-2 concave, subglabrous; abdominal ventrite 5 flat, coarsely punctate, with sparse erect piliform scales. Penis (Fig. 23b) with sides of body subparallel; apex bisinuate, with median notch; transfer apparatus compact, symmetrical, but slightly tilted to the left; apodemes 2.5 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 3.04-4.04 mm. Coloration of elytral base ranging from orange-ferruginous to dark ferruginous and almost black. Female rostrum with median and pair of submedian glabrous costae; epistome simple. Female elytra more slender, with lateral contour convex to apex; punctures sparser and smaller than in male; male elytra relatively broad between humeri, converging in almost straight line to apex.

Material examined.

Holotype (MZB): ARC1468 (EMBL # LM655566), West Nusa Tenggara Prov., Lombok, Tetebatu, Rinjani-trail from Orong Gerisak, sample 7, S08°29.433', E116°24.746', 1240 m, 04-IV-2010 (MZB). Paratypes (ARC, MZB, SMNK, ZSM): Lombok: 4 exx, ARC0163, N Tetebatu, 1200-1450 m, 07-XII-2004; 1 ex, ARC1461 (EMBL # LM655559), Tetebatu, Rinjani-trail from Orong Gerisak, sample 6, S08°29.577', E116°24.782', 1195 m, 04-IV-2010; 2 exx, ARC1474 (EMBL # LM655572), ARC1475 (EMBL # LM655573), Tetebatu, Rinjani-trail from Orong Gerisak, sample 5, S08°30.096', E116°25.062', 1010 m, 04-IV-2010; 1 ex, ARC2270 (EMBL # LM655724), Senaru, Rinjani-track, sample 6, S08°19.359', E116°24.070', 860 m, 23-III-2011; 4 exx, ARC2271 (EMBL # LM655725), ARC2272 (EMBL # LM655726), ARC2273 (EMBL # LM655727), Santong, Rinjani-track, sample 1, S08°20.715', E116°19.695', 830 m, 24-III-2011; 1 ex, Santong, Rinjani-track, sample 2, S08°20.813', E116°19.778', 870 m, 24-III-2011; 1 ex, ARC2283 (EMBL # LM655737), Santong, Rinjani-track, sample 3, S08°20.996', E116°20.001', 960 m, 25-III-2011; 2 exx, ARC2284 (EMBL # LM655738), Santong, Rinjani-track, sample 4, S08°21.160', E116°20.067', 1005 m, 25-III-2011.

Distribution.

West Nusa Tenggara Prov., Lombok (Santong, Senaru, Tetebatu). Elevation: 830-1240 m.

Etymology.

This epithet is based on the combination of the Latin nouns dens (tooth) and pes (foot).

Notes.

Trigonopterus dentipes Riedel, sp. n. was coded as " Trigonopterus sp. 322" by Tänzler et al. (2014).