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Holotype, male (Fig. 24a). Length 3.31 mm. Color black; tarsi and tibiae dark ferruginous; antenna light ferruginous. Body subrhomboid; in dorsal aspect with marked constriction between pronotum and elytron; in profile with moderate constriction. Rostrum medially punctate, with pair of sublateral furrows converging posteriorly on forehead; epistome forming indistinct, angulate ridge. Pronotum with marked subapical constriction, sides subparallel, behind subapical constriction projecting with marked angular protrusions; center of disk densely punctate, laterally with sparse punctures. Elytra of subtriangular shape; median suture carinate; striae moderately impressed; intervals weakly punctate; surface weakly microreticulate, with sparse clusters of white recumbent scales; interval 7 subapically forming indistinct ridge. Femora edentate. Meso- and metatibia in basal half markedly widened, dorsal edge curved, denticulate. Metafemur with denticulate dorsoposterior edge, subapically without stridulatory patch. Metathoracic and abdominal venter forming common concavity, subglabrous. Aedeagus (Fig. 24b) with body parallel-sided, markedly curved ventrad; apex medially extended; transfer apparatus spiniform; ductus ejaculatorius without bulbus. Intraspecific variation. Length 3.22–3.69 mm. Integument relatively smooth and with scattered white scales in specimens from Sentani, dull-coriaceous and almost nude in specimens from Angkasa indah. Aedeagus with median tip acute in specimens from Sentani, median tip more rounded in specimens from Angkasa indah.
Holotype (MZB): ARC0512 (EMBL # FN429218), WEST NEW GUINEA, Jayapura Reg., Cyclops Mts, Sentani, S02°32.031', E140°30.412', 710 m, 02-XII-2007, sifted. Paratypes (SMNK, ZSM): WEST NEW GUINEA, Jayapura Reg., Cyclops Mts: 1 ex, ARC0534 (EMBL # FN429240), Sentani, S02°31.516', E140°30.436', 1150 m, 21-XI-2007, sifted; 2 exx, ARC0549 (EMBL # FN429255), Sentani, S02°31.776', E140°30.215', 945 m, 21-XI-2007, sifted; 2 exx, Sentani, S02°31.603', E140°30.434', 1095 m, 28-XI-07, sifted; 1 ex, Sentani, S02°31.912', E140°30.416', 785 m, 02-XII-2007, sifted; 1 ex, ARC0092, Sentani,1000 m, 23-XII-2004, sifted; 1 ex, S02°31.425', E140°30.474', 1265 m, 30-XI-2007, sifted; 2 exx, ARC1684 (EMBL # HE615971), ARC1685 (EMBL # HE615972), Angkasa indah, S02°30.346', E140°42.087', 490 m, 28-VI-2010, sifted.
Jayapura Reg. (Cyclops Mts). Elevation: 490–1265 m.
Sifted from leaf litter in primary forest.
This epithet is based on the name of the dromedary camel (Camelus dromedaries L.) and refers to the body shape.
Trigonopterus dromedarius Riedel, sp. n. was coded as “Trigonopterus sp. 41” by Riedel et al. (2010) and Tänzler et al. (2012), respectively “Trigonopterus spao” in the EMBL/GenBank/DDBJ databases. Specimens from Angkasa indah and Sentani exhibit minor morphological differences (e.g. tip of aedeagus; surface of integument) and a high cox1 p-distance of 7.79%. These allopatric populations may be regarded “subspecies”.
- 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