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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.
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.
Manokwari Reg. (Arfak Mts). Elevation: 1520 m.
Sifted from leaf litter in montane forest dominated by Nothofagus.
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.
- Riedel, A; Sagata, K; Surbakti, S; Rene Tänzler, ; Michael Balke, ; 2013: One hundred and one new species of Trigonopterus weevils from New Guinea ZooKeys, 280: 1-150. doi: 10.3897/zookeys.280.3906
- Tänzler R, Sagata K, Surbakti S, Balke M, Riedel A (2012) DNA barcoding for community ecology - how to tackle a hyperdiverse, mostly undescribed Melanesian fauna. PLoS ONE 7 (1): e28832. doi: 10.1371/journal.pone.0028832