Trigonopterus ancoruncus 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 : 9

6. Trigonopterus ancoruncus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 6a). Length 2.49 mm. Color black; antenna and tarsi ferruginous. Body subovate; in dorsal aspect and in profile with distinct constriction between pronotum and elytron. Eyes large. Rostrum medially with two rows of course squamiferous punctures; pair of lateral furrows with row of larger overlapping almond-shaped white scales. Pronotum densely punctate; dorsally punctures containing inconspicuous setae, anterolaterally with scattered white scales. Elytra with striae distinct; intervals flat, subglabrous, each with one row of minute punctures. Femora ventrally with acute tooth. Mesofemur and metafemur dorsally sparsely squamose with white scales. Metafemur subapically with stridulatory patch. Metatibia at middle curved ventrad, subapically with brush of long setae; uncus hook-like extended, curved ventrobasad. Aedeagus (Fig. 6b) with apodemes 2.5 × as long as body; sides of body weakly bisinuate, converging; apex extended, pointed, markedly curved ventrad, sinuate in profile; transfer apparatus flagelliform, subequal to body of aedeagus; ductus ejaculatorius without bulbus.

Material examined.

Holotype (SMNK): ARC1115 (EMBL # HE615744), PAPUA NEW GUINEA, Simbu Prov., Karimui Dist., Haia, Supa, S06°40.078', E145°03.207' to S06°39.609', E145°03.012', 1220-1450 m, 02-X-2009.

Distribution.

Simbu Prov. (Haia). Elevation: ca. 1220-1450 m.

Biology.

Collected by beating foliage in montane forest.

Etymology.

This epithet is based on a combination of the Latin nouns ancora (anchor) and uncus (hook; tibial uncus) in apposition and refers to the species´ remarkable metatibia.

Notes.

Trigonopterus ancoruncus Riedel, sp. n. was coded as " Trigonopterus sp. 78" by Tänzler et al. (2012).