Trigonopterus oviformis 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 : 53

58. Trigonopterus oviformis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 58a). Length 2.45 mm. Color black with bronze lustre, antenna and tarsi ferruginous. Body subovate; in dorsal aspect and in profile with weak constriction between pronotum and elytron. Rostrum dorsally with median and pair of submedian ridges; sparsely squamose with slender subrecumbent scales. Pronotum relatively small; disk sparsely punctate; laterally with sparse, almond-shaped, cream-colored scales. Elytra with striae distinct; intervals flat, subglabrous; interval 2 basally with patch of almond-shaped, cream-colored scales. Femora ventrally with minute denticle. Meso- and metafemur especially dorsally squamose with cream-colored scales; metafemur subapically with stridulatory patch. Meso- and metatibia in apical half with regular row of setae, near uncus with small brush of long setae. Aedeagus (Fig. 58b) apically subtruncate, with dense fringe of setae; subapically sides with pair of membranous protrusions; orifice and body with complex sclerites; transfer apparatus symmetrical; ductus ejaculatorius with bulbus. Intraspecific variation. Length 2.16-2.45 mm. Female rostrum dorsally punctate and sparsely setose, in basal 1/3 coarsely punctate-rugose.

Material examined.

Holotype (SMNK): ARC1086 (EMBL # HE615716), PAPUA NEW GUINEA, Simbu Prov., Karimui Dist., Haia, S06°41.624', E145°00.728', 960 m, 25-IX-2009. Paratypes (NAIC): 1 ex, ARC1092 (EMBL # HE615722), PAPUA NEW GUINEA, Simbu Prov., Karimui Dist., Haia S06°43.948', E144°59.856', 915 m, 26-IX-2009.

Distribution.

Simbu Prov. (Haia). Elevation: 915-960 m.

Biology.

Sifted from leaf litter in primary forest.

Etymology.

This epithet is based on a combination of the Latin noun ovum (egg) and the suffix -formis (-shaped) and refers to the habitus of this species.

Notes.

Trigonopterus oviformis Riedel, sp. n. was coded as " Trigonopterus sp. 254" by Tänzler et al. (2012).