Trigonopterus cirripes Riedel

Riedel, Alexander & Narakusumo, Raden Pramesa, 2019, One hundred and three new species of Trigonopterus weevils from Sulawesi, ZooKeys 828, pp. 1-153 : 1

16. Trigonopterus cirripes Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 16a). Length 2.54 mm. Color of antennae and tarsi ferruginous; remainder black. Body subovate; in dorsal aspect with weak constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with broad median costa and pair of submedian ridges; intervening furrows each with sparse row of subrecumbent setae; epistome weakly scabrous. Pronotum with disk densely punctate; interspaces between punctures subglabrous, subequal to or smaller than punctures´ diameter. Elytra with striae marked by fine lines and rows of small punctures; basal margin bordered by transverse row of deeper punctures; sutural interval with additional row, other intervals subglabrous, with few interspersed punctures; stria 8 along humerus with five coarse punctures. Femora edentate; anteroventral ridge of mesofemur and metafemur crenate; anterior surface coarsely punctate, each puncture with recumbent narrow scale. Metafemur with dorsoposterior edge denticulate; subapically with stridulatory patch. Metatibia subapically concave, subglabrous, with two dense clusters of setae, near tarsal articulation setae strongly incurved. Abdominal ventrites 1-2 concave, subglabrous; ventrite 5 with apical 1/2 bent ventrad; subapically punctate. Penis (Fig. 16b) with sides of body constricted in basal 1/2, diverging to shallow subapical constriction; ostium at middle with large sclerite; apodemes 2.5 × as long as body of penis; transfer apparatus elongate; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.48-2.55 mm. Female rostrum subglabrous, with two submedian rows of punctures, with pair of sublateral furrows. Female abdominal ventrite 5 flat, subapically punctate.

Material examined.

Holotype (MZB): ARC2915 (GenBank # MK260283), N-Sulawesi Prov., Kotamobagu, Modoinding, Kakenturan, 00°46.951'N 124°30.427'E to 00°47.053'N 124°30.413'E, 1210-1228 m, beaten, 19-V-2012. Paratypes (MZB, SMNK): N-Sulawesi Prov.: 13 exx, ARC2916 (EMBL # LN884945), ARC2917 (GenBank # MK260284), ARC2918 (GenBank # MK260285), same data as holotype.

Distribution.

N-Sulawesi Prov. (Modoinding). Elevation ca. 1200 m.

Biology.

On foliage in montane forests.

Etymology.

This epithet is a combination of the Latin nouns cirrus (curl) and pes (foot, leg). It refers to the male metatibia.

Notes.

Trigonopterus cirripes Riedel, sp. n. was coded as " Trigonopterus sp. 395".