Trigonopterus sulcatus Riedel

Riedel, Alexander, Sagata, Katayo, Surbakti, Suriani, Rene Taenzler, & Michael Balke,, 2013, One hundred and one new species of Trigonopterus weevils from New Guinea, ZooKeys 280, pp. 1-150 : 76-77

86. Trigonopterus sulcatus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 86a). Length 2.24 mm. Color black; legs and apex of pronotum deep ferruginous; antenna light ferruginous. Body subovate-globose; with distinct constriction between pronotum and elytron; in profile evenly convex. Rostrum in basal half medially weakly carinate, coarsely punctate, sparsely setose; epistome with transverse, angulate ridge. Pronotum with subapical constriction, laterally with pair of blunt denticles; disk coarsely punctate, weakly rugose. Elytra with striae deeply incised, towards sides with deep interspersed punctures; intervals costate, subglabrous, with sparse small punctures and minute recumbent setae; apex rounded. Femora edentate. Metafemur with weakly denticulate dorsoposterior edge, subapically with stridulatory patch. Abdominal ventrite 2 laterally projecting dentiform over elytral edge in profile; abdominal ventrites 1-2 with common cavity; abdominal ventrite 5 sublaterally with pair of denticles. Aedeagus (Fig. 86b) apically sparsely setose; with complex, symmetrical transfer apparatus; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.23-2.64 mm.

Material examined.

Holotype (MZB): ARC0632 (EMBL # FN429287), WEST NEW GUINEA, Jayapura Reg., Cyclops Mts, Sentani, S02°32.221', E140°30.526', 575 m, 19-XI-2007, sifted. Paratypes (SMNK, ZSM): WEST NEW GUINEA, Jayapura Reg., Cyclops Mts, Sentani: 2 exx, ARC0508 (EMBL # FN 429214), ARC0509 (EMBL # FN429215), S02°32.031', E140°30.412', 710 m, 02-XII-2007, sifted.

Distribution.

Jayapura Reg. (Cyclops Mts). Elevation: 575-710 m.

Biology.

Sifted from leaf litter in lowland forest.

Etymology.

This epithet is based on the Latin participle sulcatus (furrowed, grooved) and refers to the elytral sculpture.

Notes.

Trigonopterus sulcatus Riedel, sp. n. was coded as " Trigonopterus sp. 33" by Riedel et al. (2010) and Tänzler et al. (2012), respectively " Trigonopterus spag" in the EMBL/GenBank/DDBJ databases.