Trigonopterus strigatus 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 : 74

83. Trigonopterus strigatus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 83a). Length 2.95 mm. Color black; antenna and tarsi ferruginous. Body ovate; in dorsal aspect almost without constriction between pronotum and elytron; in profile evenly convex. Rostrum in basal half with distinct median ridge and pair of submedian ridges, furrows with sparse rows of yellowish scales; apically weakly punctate, sparsely setose. Pronotum densely punctate-reticulate. Elytra dorsally with striae deeply incised forming well-defined furrows; intervals each with one secondary furrow of fused elongate punctures; laterally subglabrous, sparsely punctate. Femora somewhat widened, with distinct anteroventral ridge, edentate. Metafemur dorsally sparsely squamose with silvery scales; with weakly denticulate dorsoposterior edge; subapically with stridulatory patch. Metatibia apically with uncus, without premucro. Abdominal ventrite 5 with shallow depression, densely punctate, with dense suberect setae. Aedeagus (Fig. 83b) apically angulate, subglabrous; complex transfer-apparatus symmetrical; ductus ejaculatorius basally swollen, with indistinct bulbus. Intraspecific variation. Length 2.94-3.06 mm. Female rostrum in apical half slender, dorsally subglabrous, punctate, posteriorly with furrows. Female abdominal ventrite 5 densely punctate, with sparse recumbent scales, medially with weak swelling.

Material examined.

Holotype (SMNK): ARC1188 (EMBL # HE615816), PAPUA NEW GUINEA, Morobe Prov., Huon peninsula, Mindik, S06°27.380', E147°25.099' to S06°27.267', E147°25.049', 1500-1650 m, 09-X-2009. Paratypes (ARC, NAIC, SMNK, ZSM): Morobe Prov., Huon peninsula, Mindik: 7 exx, ARC1189 (EMBL # HE615817), ARC1190 (EMBL # HE615818), same data as holotype; 4 exx, 1500-1670 m, S06°27.311', E147°24.073' to S06°27.221', E147°24.185', beaten, 10-X-2009; 1 ex (marked as ARC0060), 1200-1500 m, 26-IV-1998; 1 ex, 1400-1550 m, 27-IV-1998.

Distribution.

Morobe Prov. (Mindik). Elevation: 1500 m.

Biology.

Beaten from foliage of montane forests.

Etymology.

This epithet is based on the Latin participle strigatus (striated) and refers to the species´ elytral sculpture.

Notes.

Trigonopterus strigatus Riedel, sp. n. was coded as " Trigonopterus sp. 216" by Tänzler et al. (2012).