Trigonopterus sampunensis Riedel

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

82. Trigonopterus sampunensis Riedel sp. n.

Diagnostic description.

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.

Material examined.

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.

Distribution.

S-Sulawesi Prov. (Pc. Palopo). Elevation ca. 1100 m.

Biology.

In leaf litter of montane forest.

Etymology.

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

Notes.

Trigonopterus sampunensis Riedel, sp. n. was coded as " Trigonopterus sp. 388".