Trigonopterus serripes Riedel

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

89. Trigonopterus serripes Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 89a). Length 2.28 mm. Color of antennae and legs ferruginous; elytral humeri dark ferruginous; remainder black. Body subovate; in dorsal aspect with moderate constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with median carina and pair of submedian ridges; intervening furrows with sparse, erect scales; epistome short, posteriorly with transverse ridge. Pronotum with lateral edges weakly converging, with weak subapical constriction; disk with pair of distinct longitudinal impressions; medially broadly swollen, densely coarsely punctate; interspaces subglabrous, with narrow median costa; with scattered yellow elongate scales. Elytra sparsely punctate with minute punctures; striae marked by fine hairlines; in basal 1/3, at middle and subapically with sparse yellow recumbent scales. Femora dentate, with acute tooth; anteroventral ridge of metafemur crenate. Metafemur with dorsoposterior edge denticulate; subapically with stridulatory patch. Meso- and metatibia in basal 1/2 widened, dorsal edge serrate. Metatibia curved. Abdominal ventrites 1-2 concave, subglabrous, sparsely punctate, with few scattered piliform scales; ventrite 5 weakly concave, punctate, with sparse erect setae. Penis (Fig. 89b) with sides of body weakly diverging; apex subtruncate, with fringe of long curly setae; apodemes 2.9 × as long as body of penis; transfer apparatus flagelliform, 1.8 × longer than body of penis; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.28-2.36 mm. Female rostrum slender, in apical 1/2 with submedian row of punctures and sublateral furrows; epistome simple. Female ventrite 5 flat.

Material examined.

Holotype (MZB): ARC3170 (GenBank # MK260591), SE-Sulawesi Prov., N Kolaka, Uluwolo village, 03°48.073'S 121°16.856'E, 182 m, sifted, 21-IV-2013. Paratypes (MZB, SMNK): 14 exx, ARC3171 (GenBank # MK260590), ARC3172 (GenBank # MK260592), same data as holotype.

Distribution.

SE-Sulawesi Prov. (Kolaka). Elevation ca. 180 m.

Biology.

In leaf litter of lowland forest.

Etymology.

This epithet is a combination of the Latin noun serra (a saw) and the noun pes (foot, leg) and is to be treated as noun in apposition.

Notes.

Trigonopterus serripes Riedel, sp. n. was coded as " Trigonopterus sp. 533".