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Holotype, male (Fig. 60a). Length 2.45 mm. Color of antennae ferruginous; legs dark ferruginous; remainder black. Body subovate; in dorsal aspect with moderate constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with median and pair of submedian ridges; intervening furrows each with sparse row of suberect piliform scales; epistome with one median denticle and two pairs of submedian / sublateral denticles. Pronotum with disk densely punctate; each puncture containing a single seta; median line impunctate; interspaces between punctures subglabrous, subequal to punctures´ diameter. Elytra densely punctate with small punctures; striae marked by hairlines; interspaces between punctures subglabrous; striae 7–9 with larger punctures, stria 8 along humerus with seven large, coarse punctures. Femora edentate; anteroventral ridge shortened in apical 1/3. Metafemur with dorsoposterior edge weakly denticulate; subapically with stridulatory patch. Abdominal ventrites 1–2 concave, subglabrous; behind metacoxa with lateral flange; in profile ventrite 2 weakly projecting, rounded; ventrite 5 flat, subglabrous, sparsely punctate. Penis (Fig. 60b) with sides of body constricted at middle; apex pointed; dorsally body near middle with pair of densely setose patches; apodemes 2.7 × as long as body of penis; transfer apparatus spiniform, directed basad in repose, supported by X-shaped sclerite; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.45–2.98 mm. Female rostrum slender, dorsally subglabrous, anteriorly with rows of punctures, near base with median and pair of submedian costae; epistome simple.
Holotype (MZB): ARC2839 (GenBank # MK260234), S-Sulawesi Prov., Pc. Palopo, Gn. Sampuna, 02°56.545'S 120°05.595'E, 1101 m, beaten, 29-V-2012. Paratypes (MZB, SMNK, ZSM): S-Sulawesi Prov., Pc. Palopo, Gn. Sampuna: 3 exx, ARC2838 (GenBank # MK260229), ARC6072 (GenBank # MK260233), ARC6073 (GenBank # MK260232), same data as holotype; 11 exx, ARC2814 (GenBank # MK260230), ARC2815 (EMBL # LN884931), ARC2816 (GenBank # MK260231), 02°56.539'S 120°05.320'E to 02°56.545'S 120°05.595'E, 1038–1101 m, beaten, 29-V-2012; 13 exx, 02°56.545'S 120°05.595'E, 1101 m, sifted, 02-V-2013.
S-Sulawesi Prov. (Pc. Palopo). Elevation 1040–1100 m.
On foliage in montane forests, rarely in leaf litter.
This epithet is a Latinized adjective based on the type locality Puncak Palopo.
Trigonopterus palopensis Riedel, sp. n. was coded as “Trigonopterus sp. 379”.
- Riedel, A; Narakusumo, R; 2019: One hundred and three new species of Trigonopterus weevils from Sulawesi ZooKeys, (828): 1-153. doi