Trigonopterus lombokensis 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 : 45-46

Taxon classification Animalia Coleoptera Curculionidae

47. Trigonopterus lombokensis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 47a). Length 2.01 mm. Color of antennae and tarsi ferruginous, remainder black. Body in dorsal aspect with marked constriction between pronotum and elytron; with distinct constriction in profile. Rostrum with pair of dorsolateral furrows, medially coarsely punctate-rugose; dorsal profile at middle with angulation; 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 indistinct median ridge. Elytra with striae deeply impressed, each with row of slender, suberect scales; intervals costate-carinate, subglabrous; apex narrow, rounded. Meso- and metafemur each with small tooth, profemur simple, relatively long. Metafemur subapically with stridulatory patch. Abdominal ventrite 5 subbasally at middle swollen; in apical half with round depression; coarsely punctate. Penis (Fig. 47b) with sides of body subparallel; apex rounded, medially with sparse setae; transfer apparatus flagelliform, subequal to body; apodemes 2.3 × as long as body; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 1.71-2.06 mm. Color of elytra ferruginous to black. Female rostrum dorsally in apical half subglabrous, with sparse minute punctures; epistome simple. Pronotum in females and in small males relatively narrow, in large males wider. Elytra in females narrower, humeri evenly rounded; large males with humeri more distinctly, subangularly projecting laterad, in small males similar to females; intervals weakly costate, in larger specimens markedly costate or carinate.

Material examined.

Holotype (MZB): ARC1458 (EMBL # LM655556), West Nusa Tenggara Prov., Lombok, Tetebatu, Rinjani-trail from Orong Gerisak, sample 6, S08°29.577', E116°24.782', 1195 m, 04-IV-2010. Paratypes (ARC, MZB, SMNK, ZSM): Lombok: 11 exx, ARC1459 (EMBL # LM655557), same data as holotype; 23 exx, Tetebatu, Rinjani-trail from Orong Gerisak, sample 5, S08°30.096', E116°25.062', 1010 m, 04-IV-2010; 13 exx, Tetebatu, Rinjani-trail from Orong Gerisak, sample 7, S08°29.433', E116°24.746', 1240 m, 04-IV-2010; 10 exx, ARC1476 (EMBL # LM655574), ARC1477 (EMBL # LM655575), ARC1478 (EMBL # LM655576), Tetebatu, Rinjani-trail from Orong Gerisak, sample 8, S08°29.173', E116°24.517', 1345 m, 04-IV-2010; 10 exx, N Tetebatu, 1200-1450 m, 07-XII-2004; 1 ex, ARC1483 (EMBL # LM655581), Sesaot, Rinjani-trail, sample 3, S08°29.841', E116°13.679', 625 m, 28-III-2010; 7 exx, ARC2260 (EMBL # LM655714), Senaru, Rinjani-track, sam ple 1, S08°19.429', E116°24.082', 900 m, 21-III-2011; 12 exx, Senaru, Rinjani-track, sample 2, S08°20.570', E116°23.969', 1320 m, 21-III-2011; 17 exx, Lombok, Senaru, Rinjani-track, sample 3, S08°20.780', E116°23.790', 1465 m, 21-III-2011; 48 exx, Lombok, Senaru, Rinjani-track, sample 4, S08°20.439', E116°24.047', 1240 m, 21-III-2011; 47 exx, ARC2267 (EMBL # LM655721), ARC2268 (EMBL # LM655722), Senaru, Rinjani-track, sample 5, S08°19.800', E116°24.107', 1015 m, 21-III-2011; 31 exx, Lombok, Senaru, Rinjani-track, sample 6, S08°19.359', E116°24.070', 860 m, 23-III-2011; 40 exx, Senaru, Rinjani-trail, sample 7, S08°19.643', E116°24.033', 935 m, 23-III-2011; 48 exx, Senaru, Rinjani-trail, sample 8, S08°19.719', E116°24.040', 955 m, 23-III-2011; 87 exx, ARC2279 (EMBL # LM655733), ARC2280 (EMBL # LM655734), Santong, Rinjani-track, sample 1, S08°20.715', E116°19.695', 830 m, 24-III-2011; 150 exx, Santong, Rinjani-track, sample 2, S08°20.813', E116°19.778', 870 m, 24-III-2011; 67 exx, Santong, Rinjani-track, sample 3, S08°20.996', E116°20.001', 960 m, 24-III-2011; 27 exx, Santong, Rinjani-track, sample 4, S08°21.160', E116°20.067', 1005 m, 25-III-2011; 28 exx, Santong, Rinjani-track, sample 5, S08°21.351', E116°20.208', 1105 m, 25-III-2011; 27 exx, Santong, Rinjani-track, sample 6, S08°21.754', E116°20.476', 1315 m, 25-III-2011.

Distribution.

West Nusa Tenggara Prov., Lombok (Santong, Senaru, Sesaot, Tetebatu). Elevation: 625-1345 m.

Etymology.

This epithet is based on the island of Lombok.

Notes.

Trigonopterus lombokensis Riedel, sp. n. was coded as " Trigonopterus sp. 323" by Tänzler et al. (2014).