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.

Distribution.

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

Etymology.

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

Notes.

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