Trigonopterus kolakensis Riedel

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

39. Trigonopterus kolakensis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 39a). Length 2.65 mm. Color of antennae and legs ferruginous; remainder black. Body elongate; in dorsal aspect with distinct constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with median carina and pair of submedian ridges; intervening furrows with rows of erect elongate scales; epistome short, posteriorly with transverse, subangulate ridge, medially with denticle. Pronotum with disk densely punctate; interspaces between punctures subglabrous, subequal to or smaller than punctures´ diameter. Elytra densely irregularly punctate with small punctures; along basal margin and humeri with punctation more densely; striae marked by fine hairlines; apex subtruncate, with sparse scales. Femora of meso- and metafemur with anteroventral ridges crenate, ending with small tooth; anterior surface coarsely punctate, reticulate, each puncture with long subclavate scale. Metafemur with dorsoposterior edge serrate; subapically with stridulatory patch. Dorsal edge of tibiae denticulate, subbasally with distinct tooth. Abdominal ventrites 1-2 medially flat, subglabrous; ventrite 5 flat, coarsely punctate. Penis (Fig. 39b) with sides of body subparallel, slightly diverging; apex bisinuate, with sparse short setae; apodemes 2.5 × as long as body of penis; transfer apparatus complex; ductus ejaculatorius without bulbus. Intraspecific variation. Length 1.98-2.83 mm. Female rostrum more slender, dorsally punctate-rugose; epistome indistinct.

Material examined.

Holotype (MZB): ARC3159 (EMBL # LN884967), SE-Sulawesi Prov., Kolaka, km 45 on Kendari-road, Talodo village, 04°00.686'S 121°50.198'E, 515 m, sifted, 20-IV-2013. Paratypes (MZB, SMNK, ZSM): SE-Sulawesi Prov., Kolaka, km 45 on Kendari-road, Talodo village: 54 exx, ARC3160 (GenBank # MK260439), ARC3161 (GenBank # MK260438), same data as holotype; 40 exx, ARC3162 (GenBank # MK260437), 04°00.763'S 121°50.175'E, 471 m, sifted, 20-IV-2013; 4 exx, 04°00.673'S 121°49.869'E, 565 m, sifted, 20-IV-2013.

Distribution.

SE-Sulawesi Prov. (Kolaka). Elevation 470-565 m.

Biology.

In leaf litter of lowland forest.

Etymology.

This epithet is a Latinized adjective based on the type locality.

Notes.

Trigonopterus kolakensis Riedel, sp. n. was coded as " Trigonopterus sp. 482".