Trigonopterus ranakensis 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 : 58-59

Taxon classification Animalia Coleoptera Curculionidae

63. Trigonopterus ranakensis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 63a). Length 2.53 mm. Color of antennae, legs and sutural interval ferruginous; remainder black. Body subovate, in dorsal aspect and in profile with weak constriction between pronotum and elytron. Rostrum with median ridge and pair of submedian ridges, intervening furrows each with sparse row of mesad directed setae; epistome with weak transverse ridge. Pronotum coarsely punctate, laterally reticulate, submedially interspaces longitudinally rugose, with median costa; with sparse, suberect, slender scales. Elytra with striae deeply impressed, each punctures containing slender suberect scale; intervals costate, subglabrous, in basal half partly with row of punctures, along basal margin corrugate; suture incised, bordered by dense rows of punctures. Femora with simple, crenate anteroventral ridge. Metafemur subapically with stridulatory patch. Metatibia apically with uncus, without premucro. Abdominal ventrite 5 coarsely punctate, with median carina. Penis (Fig. 63b) with sides of body in basal half converging, in apical half subparallel; apex angulate, sparsely setose; transfer apparatus compact, symmetrical, with two pairs of tendons attached; apodemes 2.6 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.16-2.73 mm. Female rostrum in apical half dorsally subglabrous, punctate; epistome simple. Color of sutural interval ferruginous or darker, almost black. Female abdominal ventrite flat, with very low median ridge.

Material examined.

Holotype (MZB): ARC2196 (EMBL # LM655652), East Nusa Tenggara Prov., Flores Isl., Ruteng, Mt. Ranaka, sample 1, S08°37.321', E120°31.463', 1535 m, 08-III-2011 (MZB). Paratypes (MZB, SMNK): Flores Isl., Ruteng, Mt. Ranaka: 1 ex, ARC2197 (EMBL # LM655653), same data as holotype; 1 ex, ARC2198 (EMBL # LM655654), sample 3, S08°38.099', E120°31.745', summit area, 2205 m, 09-III-2011; 1 ex, ARC2582 (EMBL # LM655891), sample 7, S08°37.714', E120°31.509', 1850m, 09-III-2011.

Distribution.

East Nusa Tenggara Prov., Flores (Ruteng). Elevation: 1535-2205 m.

Etymology.

This epithet is based on the type locality.

Notes.

Trigonopterus ranakensis Riedel, sp. n. was coded as " Trigonopterus sp. 342" by Tänzler et al. (2014).