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Holotype, male (Fig. 5a). Length 2.26 mm. Color black; tarsi and antenna ferruginous. Body subrhomboid; in dorsal aspect with marked constriction between pronotum and elytron; in profile with shallow constriction. Rostrum dorsally dull, with 3 irregular ridges, with rows of erect setae; epistome forming angulate ridge and median denticle. Pronotum with distinct subapical constriction, sparsely punctate with small setiferous punctures, behind subapical constriction scales larger, subclavate, yellowish. Elytra subglabrous, striae weakly impressed, with minute punctures, each puncture with minute seta; apex bordered by curved ridge, median suture incised. Femora edentate. Meso- and metatibia in basal half widened, subapically narrowed. Metafemur with denticulate dorsoposterior edge, subapically without stridulatory patch. Aedeagus (Fig. 5b) widening towards subtruncate, medially pointed apex; transfer apparatus flagelliform, curved, shorter than body; ductus ejaculatorius basally swollen, without bulbus. Intraspecific variation. Length 2.00–2.28 mm. Color of elytra and legs black or ferruginous. Female rostrum dorsally punctate-rugose, in apical half without setae; epistome simple.
Holotype (MZB): ARC0556 (EMBL # FN429262), WEST NEW GUINEA, Jayapura Reg., Cyclops Mts, Sentani, S02°31.182', E140°30.542', 1510 m, 30-XI-2007, sifted. Paratypes (ARC, SMNK, ZSM): WEST NEW GUINEA, Jayapura Reg., Cyclops Mts, Sentani: 34 exx, ARC0557 (EMBL # FN429263), ARC0558 (EMBL # FN429264), ARC0559 (EMBL # HE615318), same data as holotype; 14 exx, S02°31.281', E140°30.535', 1420 m, 30-XI-2007, sifted; 7 exx (1 marked ARC0094), 1320 m, 23-XII-2004, sifted; 5 exx, 300–1400 m, 10-VIII-1991.
Jayapura Reg. (Cyclops Mts). Elevation: 1320–1510 m.
Sifted from leaf litter in montane forest.
This epithet is based on a combination of the Latin adjective amplus (wide) and the noun penna (wing, elytron) and refers to the basally widened elytra.
Trigonopterus amplipennis Riedel, sp. n. was coded as “Trigonopterus sp. 40” by Riedel et al. (2010) and Tänzler et al. (2012), respectively “Trigonopterus span” in the EMBL/GenBank/DDBJ databases.
- 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
- Riedel A, Daawia D, Balke M (2010) Deep cox1 divergence and hyperdiversity of Trigonopterus weevils in a New Guinea mountain range (Coleoptera, Curculionidae). Zoologica Scripta, 39 (1): 63-74. doi: 10.1111/j.1463-6409.2009.00404.x
- 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