Trigonopterus angulicollis 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: 9-10

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scientific name

Trigonopterus angulicollis Riedel

sp. n.

Taxon classification Animalia Coleoptera Curculionidae

6. Trigonopterus angulicollis Riedel  sp. n.

Diagnostic description.

Holotype, male (Fig. 6a). Length 2.58 mm. Color of head and legs ferruginous, remainder black. Body subhexagonal; in dorsal aspect with marked constriction between pronotum and elytron; with distinct constriction in profile. Rostrum with median ridge and pair of submedian ridges, intervening furrows punctate; punctures each with long erect scale; epistome with transverse, angulate ridge forming median denticle. Pronotum anterolaterally angularly projecting; with distinct subapical constriction; disk rugose-punctate, punctures each with slender suberect to subrecumbent scale; with median ridge. Elytra with striae deeply impressed, each with row of stout suberect bristles; intervals costate to carinate, almost nude; interval 3 most prominent; interval 7 swollen subapically, laterally projecting. Femora edentate. Metafemur subapically with stridulatory patch and transverse rows of denticles. Abdominal ventrite 5 swollen, at middle with shallow impression, sparsely setose. Penis (Fig. 6b) with sides of body subparallel, apex medially pointed; endophallic sclerites asymmetrical; transfer apparatus flagelliform, ca. 2 × as long as body; apodemes 2.0 × as long as body; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.45-2.58 mm. Female rostrum dorsally with pairs of lateral and submedian furrows; epistome simple. Female abdominal ventrite 5 flat, with median tooth markedly projecting from profile.

Material examined.

Holotype (MZB): ARC2654 (EMBL # LM655912), West Java Prov., Sukabumi, Mt. Gede, Cisaat, Situ Gunung, sample 1, S06°49.377', E106°55.729', 1281 m, 15-IV-2012. Paratypes (MZB, SMNK): W-Java Prov., Su kabumi, Mt. Gede, Cisaat, Situ Gunung: 3 exx ARC2655 (EMBL # LM655913), same data as holotype; 2 exx, ARC2658 (EMBL # LM655916), ARC2659 (EMBL # LM655917), sample 2, S06°49.038', E106°55.852', 1342 m, 15-IV-2012.


W-Java Prov. (Mt. Gede). Elevation: 1281-1342 m.


This epithet is a combination of the Latin adjective angularis (angular) and the noun collum (neck, pronotum).


Trigonopterus angulicollis  Riedel, sp. n. was coded as " Trigonopterus  sp. 314" by Tänzler et al. (2014).