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Holotype, male (Fig. 40a). Length 3.00 mm. Color of antennae ferruginous; legs dark ferruginous; remainder black. Body subovate; in profile dorsally convex, elytral base weakly projecting. Rostrum dorsally with median and pair of shorter submedian ridges; intervening furrows each with sparse row of piliform scales; in apical 1/3 with median costa and two indistinct pairs of submedian / sublateral denticles; epistome indistinct. Pronotum with disk densely punctate; median line impunctate; interspaces between punctures subglabrous, subequal to or smaller than punctures´ diameter. Elytra punctate with small punctures; basal margin bordered by transverse row of denser punctures; striae marked by hairlines; interspaces between punctures subglabrous; striae 7–9 with larger punctures, stria 8 along humerus with six large, coarse punctures. Femora edentate. Metafemur with dorsoposterior edge denticulate, with row of suberect transparent scales; subapically with stridulatory patch. Dorsal edge of tibiae with subbasal angulation. Posterior face of metatibia in apical 1/2 with dense yellowish setae. Abdominal ventrites 1–2 concave, subglabrous; ventrite 5 flat, subglabrous, apex sparsely punctate, curved ventrad. Penis (Fig. 40b) with sides of body subparallel; apex subtruncate, with short median extension, with dense fringe of curved setae; apodemes 3.5 × as long as body; transfer apparatus flagelliform, supported by M-shaped sclerite, directed basad in repose, 3.5 × longer than body of penis; ductus ejaculatorius with distinct bulbus.
Holotype (MZB): ARC2888 (EMBL # LN884943), N-Sulawesi Prov., Kotamobagu, Matalibaru, 00°32.445'N 124°14.185'E, 956 m, beaten, 20-V-2012.
N-Sulawesi Prov. (Kotamobagu). Elevation 960 m.
On foliage in montane forests.
This epithet is a Latinized adjective based on the type locality.
Trigonopterus kotamobagensis Riedel, sp. n. was coded as “Trigonopterus sp. 380”.
- Riedel, A; Narakusumo, R; 2019: One hundred and three new species of Trigonopterus weevils from Sulawesi ZooKeys, (828): 1-153. doi