Trigonopterus sampuragensis Riedel

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

83. Trigonopterus sampuragensis Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 83a). Length 3.22 mm. Color of antennae ferruginous; tarsi dark ferruginous; remainder black. Body subovate; in dorsal aspect with indistinct constriction between pronotum and elytron; in profile dorsally convex. Rostrum in basal 1/2 dorsally with glabrous median carina and pair of submedian ridges; at level of antennal insertion median carina abruptly terminated by bottom of cup-shaped ridge; with sparse suberect yellowish scales; epistome sparsely punctate, posteriorly with pair of sublateral and pair of submedian denticles. Pronotum with disk densely punctate with small punctures; interspaces between punctures subglabrous. Elytra irregularly punctate with small punctures; striae hardly visible; stria 8 near humerus with larger punctures. Femora with anteroventral ridge terminating with acute tooth, in meso- and metafemur anteroventral ridge crenate; anterior surface of femora coarsely punctate, each puncture with recumbent silvery scale. Metafemur with dorsoposterior edge simple, without denticles; subapically with stridulatory patch. Abdominal ventrites 1-2 concave, subglabrous; ventrite 5 at middle with distinct depression, concave, sparsely punctate, sublaterally densely punctate. Penis (Fig. 83b) with sides of body subparallel, apex rounded, without setae; apodemes 1.9 × as long as body of penis; transfer apparatus supported by lyriform sclerite; ductus ejaculatorius without bulbus. Intraspecific variation. Length 3.22-3.44 mm.

Material examined.

Holotype (MZB): ARC2847 (EMBL # LN884936), C-Sulawesi Prov., Pendolo, Gn. Sampuraga, 02°12.476'S 120°45.506'E, 1050 m, beaten, 31-V-2012. Paratypes (MZB, SMNK): C-Sulawesi Prov.: 4 exx, ARC3112 (GenBank # MK260376), ARC3113 (GenBank # MK260377), Pendolo, Gn. Sampuraga, 02°12.165'S 120°45.567'E to 02°12.308'S 120°45.544'E, 934-1011 m, beaten, 13-V-2013.

Distribution.

C-Sulawesi Prov. (Pendolo). Elevation 1010-1050 m.

Biology.

On foliage in montane forests.

Etymology.

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

Notes.

Trigonopterus sampuragensis Riedel, sp. n. was coded as " Trigonopterus sp. 417".