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Holotype, male (Fig. 81a). Length 3.25 mm. Color of legs and head ferruginous, remainder black. Body elongate; in dorsal aspect with marked constriction between pronotum and elytron; in profile dorsally with indistinct constriction. Rostrum with median carina terminating on forehead; with pair of submedian ridges; intervening furrows each with sparse row of erect, piliform scales; epistome medially with transverse ridge, without denticle. Pronotum anterolaterally subangularly projecting; without distinct subapical constriction; disk coarsely rugose-punctate; each puncture containing suberect piliform scale; with median ridge. Elytra with striae deeply impressed; each with row of suberect piliform scales; intervals weakly carinate; costa of interval 2 shortened at base; interval 7 swollen subapically, laterally weakly projecting; apex extended ventrad, beak-shaped. Meso- and metafemur with crenulate anteroventral ridge terminating with blunt tooth. Metafemur subapically with stridulatory patch and transverse row of denticles. Abdominal ventrite 5 almost flat, subapically with shallow pit. Penis (Fig. 81b) with body in profile moderately curved ventrad; in dorsal aspect sides subparallel in basal half, anteriorly gently diverging; apex subangulate, without median extension; apodemes 2.0 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.79–3.34 mm. Female rostrum dorsally with pairs of lateral and submedian furrows; epistome simple. Elytral apex in males rounded; in females narrower, with distinct median notch. Female abdominal ventrite 5 flat.
Holotype (MZB): ARC2668 (EMBL # LM655926), West Java Prov., Sumedang, Sukajadi, Mt. Cakrabuana, sample 3, S07°01.493', E108°08.065', 1394 m, 19-IV-2012. Paratypes (MZB, SMNK, ZSM): W-Java Prov., Sumedang, Sukajadi, Mt. Cakrabuana: 7 exx, ARC2669 (EMBL # LM655927), ARC2670 (EMBL # LM655928), same data as holotype; 1 ex, sample 2, S07°01.243', E108°08.056', 1292 m, 19-IV-2012; 2 exx, sample 4, S07°01.734', E108°08.059', 1530 m, 19-IV-2012; 4 exx, sample 5, S07°01.804', E108°08.044', 1563 m, 20-IV-2012.
W-Java Prov. (Mt. Cakrabuana). Elevation: 1292–1563 m.
This epithet is based on the Latin adjective silvestris (living in the forest) and refers to the species habitat.
Trigonopterus silvestris Riedel, sp. n. was coded as “Trigonopterus sp. 373”.
- Riedel, A; Tänzler, R; Balke, M; Rahmadi, C; Suhardjono, Y; 2014: Ninety-eight new species of Trigonopterus weevils from Sundaland and the Lesser Sunda Islands ZooKeys, (467): 1-162. doi