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Holotype, male (Fig. 15a). Length 2.58 mm. Color of antennae and tarsi ferruginous; remainder black. Body subovate; in profile dorsally convex. Rostrum dorsally with median carina; in basal 1/2 with submedian ridges; intervening furrows with sparse rows of suberect setae; epistome indistinct. Pronotum with disk densely punctate except along impunctate median line; interspaces between punctures subglabrous, subequal to or larger than punctures´ diameter. Elytra irregularly punctate with small punctures; some striae marked by hardly visible hairlines. Femora edentate. Meso- and metafemur with anteroventral ridge weakly crenate. Metafemur with dorsoposterior edge denticulate-crenate; subapically with stridulatory patch. Metatibia with dorsal edge weakly denticulate, especially near middle. Abdominal ventrites 1–2 concave, subglabrous; ventrite 5 at middle with shallow depression. Penis (Fig. 15b) with sides of body subparallel; apex subangulate, with short median extension; apodemes 3.0 × as long as body of penis; transfer apparatus spiniform, directed basad in repose by brace-like sclerites; ductus ejaculatorius with distinct bulbus. Intraspecific variation. Length 2.58–2.75 mm. Female rostrum slender, dorsally subglabrous, with two submedian rows of punctures, with pair of sublateral furrows. Female abdominal ventrite 5 flat.
Holotype (MZB): ARC3262 (GenBank # MK260521), C-Sulawesi Prov., Luwuk, Salodi, Gn. Taluanjang, 00°49.202'S 122°52.395'E to 00°49.307'S 122°52.322'E, 600–760 m, beaten, 21-V-2013. Paratypes (MZB, SMNK): C-Sulawesi Prov.: 13 exx, ARC3261 (GenBank # MK260520), ARC3263 (GenBank # MK260518), ARC3264 (GenBank # MK260519), same data as holotype; 1 ex, Luwuk, Salodi, Gn. Taluanjang, 00°49.307'S 122 52.322'E, 760 m, sifted, 21-V-2013.
C-Sulawesi Prov. (Luwuk). Elevation 600–760 m.
On foliage in lowland forests.
This epithet is a Latinized adjective based on the former name of Sulawesi, Celebes.
Trigonopterus celebensis Riedel, sp. n. was coded as “Trigonopterus sp. 503”.
- Riedel, A; Narakusumo, R; 2019: One hundred and three new species of Trigonopterus weevils from Sulawesi ZooKeys, (828): 1-153. doi