Trigonopterus aeneus 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 : 6

2. Trigonopterus aeneus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 2a). Length 1.91 mm. Color black with greenish-bronze lustre; antenna and tarsi ferruginous. Body subrhomboid; in dorsal aspect and in profile with distinct constriction between pronotum and elytron. Rostrum with weak median wrinkle; epistome simple. Eyes small. Pronotum with weak subapical constriction; disk sparsely punctate. Elytra with strial punctures distinct; intervals flat, subglabrous; interval 7 subapically costate, forming angulate ridge; sutural interval apically with knob. Meso- and metafemur ventrally weakly dentate. Metafemur subapically without stridulatory patch. Onychium ca. 1.8 × longer than tarsomere 3. Aedeagus (Fig. 2b) with apex weakly asymmetrical; long median extension somewhat shifted to the left; transfer apparatus hook-shaped; ductus ejaculatorius with indistinct bulbus, torn off in holotype. Intraspecific variation. Length 1.63-1.91 mm. Female rostrum dorsally subglabrous, sparsely punctate.

Material examined.

Holotype (SMNK): ARC1089 (EMBL # HE615719), PAPUA NEW GUINEA, Simbu Prov., Karimui Dist., Haia, S06°43.948', E144°59.856', 915 m, 26-IX-2009. Paratypes (NAIC, SMNK, ZSM): PAPUA NEW GUINEA, Simbu Prov.: 12 exx, ARC1090 (EMBL # HE615720), ARC1091 (EMBL # HE615721), same data as holotype; 1 ex, Haia, S06°41.624', E145°00.728', 960 m, 25-IX-2009, sifted; 1 ex, ARC1105 (EMBL # HE615734, Haia, S06°41.018', E145°00.995', 1090 m, 04-X-2009.

Distribution.

Simbu Prov. (Haia). Elevation: 915-1090 m.

Biology.

Sifted from leaf litter in primary forest.

Etymology.

This epithet is based on the Latin adjective aeneus (of bronze) and refers to its coloration.

Notes.

Trigonopterus aeneus Riedel, sp. n. was coded as " Trigonopterus sp. 267" by Tänzler et al. (2012).