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Holotype, male (Fig. 82a). Length 2.14 mm. Color of antennae ferruginous; legs and head dark ferruginous; remainder black. Body subovate; in profile dorsally convex. Rostrum dorsally with median and pair of submedian ridges; intervening furrows with sparse rows of setae; epistome posteriorly with transverse ridge. Pronotum with disk densely punctate; interspaces between punctures subglabrous, subequal to punctures´ diameter; median line impunctate. Elytra with striae marked by small punctures; stria 8 near humerus with slightly larger punctures; suture bordered by row of small punctures; intervals subglabrous. Anteroventral ridge of mesofemur and metafemur ending with small blunt tooth. Metafemur with simple dorsoposterior edge, dorsally with sparse suberect transparent scales; subapically with stridulatory patch. Abdominal ventrites 1–2 concave, subglabrous, microreticulate; ventrite 2 laterally forming flange, in profile subangularly projecting; ventrite 5 subglabrous, sparsely punctate, at middle with round pit. Penis (Fig. 82b) with sides of body subparallel; apex subtruncate with short median extension; apodemes 2.9 × as long as body of penis; transfer apparatus flagelliform, directed basad in repose, subequal in length to body of penis; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.04–2.50 mm.
Holotype (MZB): ARC2837 (GenBank # MK260258), S-Sulawesi Prov., Pc. Palopo, Gn. Sampuna, 02°56.545'S 120°05.595'E, 1101 m, sifted, 29-V-2012. Paratypes (MZB, SMNK): S-Sulawesi Prov.: 3 exx, ARC3090 (GenBank # MK260259), ARC3091 (GenBank # MK260257), ARC3092 (GenBank # MK260260), same data as holotype.
S-Sulawesi Prov. (Pc. Palopo). Elevation ca. 1100 m.
In leaf litter of montane forest.
This epithet is a Latinized adjective based on the type locality, Mt Sampuna.
Trigonopterus sampunensis Riedel, sp. n. was coded as “Trigonopterus sp. 388”.
- Riedel, A; Narakusumo, R; 2019: One hundred and three new species of Trigonopterus weevils from Sulawesi ZooKeys, (828): 1-153. doi