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Holotype, male (Fig. 91a). Length 2.25 mm. Color black; legs deep ferruginous; antenna and tarsi light ferruginous. Body subovate; with weak constriction between pronotum and elytron; in profile evenly convex. Rostrum dorsally rugose-punctate, at middle with low median ridge and pair of submedian ridges. Eyes large. Pronotum punctate; interstices usually larger than diameter of punctures. Elytra punctate with small punctures; striae weakly impressed; intervals with minute punctures; lateral stria behind humeri with dense row of deep punctures. Femora with small tooth at middle. Metafemur dorsoposteriorly punctate-denticulate; subapically with stridulatory patch. Tibiae dorsally carinate, with rows of dark scales partly projecting over dorsal edge. Abdominal ventrite 5 flat, densely punctate. Aedeagus (Fig. 91b) with sides converging in apical half; apex rounded, sparsely setose; transfer-apparatus asymmetrical, spiniform, curved somewhat S-shaped, subequal to body of aedeagus; ductus ejaculatorius without bulbus. Intraspecific variation. Length 1.86–2.58 mm. Female rostrum dorsally without distinct ridges, with rows of punctures.
Holotype (MZB): ARC0428 (EMBL # FN429139), WEST NEW GUINEA, Jayapura Reg., Cyclops Mts, Sentani, S02°31.2', E140°30.5', 1420–1520 m, 30-XI-2007, beaten. Paratypes (ARC, SMNK, ZSM): WEST NEW GUINEA, Jayapura Reg., Cyclops Mts, Sentani: 15 exx, ARC0429 (EMBL # FN429140), ARC0430 (EMBL # FN429141), same data as holotype; 16 exx, S02°31.3', E140°30.5', 1200–1420 m, 30-XI-2007; 2 exx, S02°31.281', E140°30.535', 1420 m, 30-XI-2007; 1 ex, 1100–1600 m, 05-X-1991; 2 exx, 950–1450 m, 03-X-1992; 2 exx, 300–1400 m, 10-VIII-1991; 5 exx (1 marked as “ARC00410”) 1100–1600 m, 05-X-1991; 1 ex, 1200–1400 m, 09-VIII-1992.
Jayapura Reg. (Cyclops Mts). Elevation: 1400–1420 m.
Collected by beating foliage in montane forests.
This epithet is based on the Latin noun tibia (shinbone) and refers to the species´ diagnostic tibial morphology.
- 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