Trigonopterus glaber 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 : 29-30

32. Trigonopterus glaber Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 32a). Length 1.98 mm. Color black, antenna and tarsi ferruginous. Body laterally somewhat compressed; ovate; without constriction between pronotum and elytron; in profile almost evenly convex. Rostrum dorsally in basal half with pair of sublateral furrows; medially even, sparsely punctate. Eyes large. Pronotum subglabrous. Elytra subglabrous, laterally sparsely punctate with small punctures, striae indistinct. Femora with anteroventral ridge. Profemur subparallel. Meso- and metafemur with dorsoposterior edge subapically worn; metafemur subapi cally without stridulatory patch. Tibiae simple, without rows or brushes of long setae. Metaventrite laterally forming acute process over metacoxa, reaching tibial insertion. Metaventrite and abdominal ventrite 1 subglabrous, with sparse recumbent setae. Abdominal ventrite 2 fused to and forming common cavity with ventrite 1. Abdominal ventrite 5 anteriorly with pair of distinct longitudinal protrusions, indistinct median cavity posteriorly open. Aedeagus (Fig. 32b) apically with median extension and with pair of submedian teeth; body with two conspicuous pairs of endophallic sclerites; ductus ejaculatorius without bulbus. Intraspecific variation. Length 1.98-2.18 mm. Female rostrum subglabrous except in basal ¼ with ridges. Female abdominal ventrite 5 flat.

Material examined.

Holotype (SMNK): ARC0960 (EMBL # HE615593), PAPUA NEW GUINEA, Central Prov., Moroka area, Kailaki, Mt. Berogoro, S09°24.213', E147°33.870' to S09°23.647', E147°34.244', 500-600 m, 20-IX-2009. Paratypes (NAIC, SMNK, ZSM): PAPUA NEW GUINEA, Central Prov.: 1 ex, ARC0961 (EMBL # HE615594), same data as holotype; 8 exx, Moroka area, Kailaki, Mt. Berogoro, S09°24.213', E147°33.870' to S09°23.647', E147°34.244', 500-565 m, 26-X-2009; 4 exx, ARC0942 (EMBL # HE615575), ARC0943 (EMBL # HE615576), Varirata N.P., S09°26.150', E147°21.520' to S09°26.148', E147°21.361', 700-800 m, 19-IX-2009; 16 Ex, ARC0991 (EMBL # HE615624), Moroka area, Kailaki, Wariaga, S09°25.350', E147°31.047' to S09°25.403', E147°31.315', 650-820 m, 27-X-2009; 9 exx, Moroka area, Kailaki, Wariaga, S09°25.350', E147°31.047' to S09°25.683', E147°31.707', 650-920 m, 27-X-2009; 18 exx, Moroka area, Kailaki, Wariaga, S09°25.403', E147°31.315' to S09°25.683', E147°31.707', 820-920 m, 27-X-2009; 5 exx, Moroka area, Kailaki, Beremutana ridge, S09°25.515', E147°33.136' to S09°25.754', E147°33.485', 535-700 m, 28-X-2009, beaten; 5 exx, Moroka area, Kailaki, Beremutana ridge, S09°25.754', E147°33.485' to S09°25.940', E147°33.703', 700-845 m, 28-X-2009, beaten; 2 exx, Moroka area, Kailaki, Beremutana ridge, S09°25.515', E147°33.136' to S09°25.754', E147°33.485', 535-650 m, 28-X-2009, beaten.

Distribution.

Central Prov. (Varirata, Moroka). Elevation: 565-820 m.

Biology.

Collected by beating foliage in primary forests.

Etymology.

This epithet is based on the Latin adjective glaber (hairless, bald) and refers to its smooth body.

Notes.

Trigonopterus glaber Riedel, sp. n. was coded as " Trigonopterus sp. 164" by Tänzler et al. (2012).