Trigonopterus echinus Riedel

Riedel, Alexander, Sagata, Katayo, Surbakti, Suriani, Rene Taenzler, & Michael Balke,, 2013, One hundred and one new species of Trigonopterus weevils from New Guinea, ZooKeys 280, pp. 1-150 : 25

26. Trigonopterus echinus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 26a). Length 1.41 mm. Color black; antenna light ferruginous, club dark; legs and head dark ferruginous. Body subglobose; with distinct constriction between pronotum and elytron; in profile almost evenly rounded, with weak constriction between pronotum and elytron. Rostrum basally with indistinct, median ridge and pair of submedian ridges, sparsely setose; apical 1/3 subglabrous; epistome simple. Eyes small. Pronotum with weak subapical constriction; disk densely, coarsely punctate; each puncture with short, yellowish scale. Elytra with striae deeply incised; with suberect, yellowish scales; intervals subglabrous, markedly costate. Femora subapically ventrally constricted. Metafemur subapically with stridulatory patch. Protibia with long, hook-shaped uncus. Aedeagus (Fig. 26b) with apex rounded; transfer apparatus symmetrical, spiniform; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 1.28-1.54 mm. Female rostrum basally without ridges; apical half subglabrous. Suberect scales may be partly abraded.

Material examined.

Holotype (MZB): ARC0781 (EMBL # HE615464), WEST NEW GUINEA, Manokwari, Arfak Mts, S01°04.087', E133°54.268', 1520 m, 08-XII-2007, sifted. Paratypes (SMNK, ZSM): 21 exx, ARC0782 (EMBL # HE615465), ARC0783 (EMBL # HE615466), same data as holotype; Mokwam, Siyoubrig, S01°06.107', E133°54.888', 1530 m, 10-XII-2007.

Distribution.

Manokwari Reg. (Arfak Mts). Elevation: 1520 m.

Biology.

Sifted from leaf litter in montane forest dominated by Nothofagus .

Etymology.

This epithet is based on the Latin noun echinus (hedgehog) in apposition and refers to the species´ general habitus and its suberect scales resembling spines.

Notes.

Trigonopterus echinus Riedel, sp. n. was coded as " Trigonopterus sp. 230" by Tänzler et al. (2012).