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Holotype, male (Fig. 69a). Length 2.14 mm. Color black; tarsi ferruginous; antenna light ferruginous. Body subglobose; with weak constriction between pronotum and elytron; in profile evenly convex. Rostrum in basal half with median ridge and pair of submedian ridges, at middle with tubercle; apical half laterally bordered by ridges; epistome at middle with dorsoposteriad directed horn. Pronotum basally angulate; apex, base, and sides densely punctate, disk medially and sublaterally subglabrous. Elytra with suture and striae 1–3 incised; all striae marked by small punctures; intervals subglabrous, with row of minute punctures; base with yellowish, posteriad directed scales; interval 7 subapically swollen. Meso- and metafemur with anteroventral ridge weakly dentate. Metatibia ventrally in apical half with row of long setae. Metafemur with stridulatory patch. Aedeagus (Fig. 69b) with apex rounded; endophallus distally with brace-shaped sclerite; ductus ejaculatorius, without bulbus. Intraspecific variation. Length 1.76–2.26 mm. Female rostrum dorsally flattened, medially subglabrous, with rows of punctures and lateral furrows; epistome simple. Female metatibia subapically simple, without long setae.
Holotype (MZB): ARC0554 (EMBL # FN429260), 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, Senani: 7 exx, ARC0555 (EMBL # FN429261), ARC0562 (EMBL # FN429268), same data as holotype; 1 ex, S02°31.383', E140°30.490', 1275 m, 30-XI-2007, sifted; 1 ex, S02°31.281', E140°30.535', 1420 m, 30-XI-2007, sifted; 4 exx (1 marked ARC0095), 1320 m, 23-XII-2004, sifted; 2 exx, 300–1400 m, 10-VIII-1991; 1 ex, 1200–1400 m, 09-VIII-1992, sifted.
Jayapura Reg. (Cyclops Mts). Elevation: 1275–1510 m.
Sifted from leaf litter in montane crippled forest.
This epithet is a noun in apposition and refers to the horn on the rostral apex, resembling the one of a mammal rhinoceros.
Trigonopterus rhinoceros Riedel, sp. n. was coded as “Trigonopterus sp. 44” by Riedel et al. (2010) and Tänzler et al. (2012), respectively “Trigonopterus spar” 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