Trigonopterus pauper Riedel

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

62. Trigonopterus pauper Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 62a). Length 1.94 mm. Color of antennae light ferruginous; legs and head dark ferruginous; remainder black. Body subovate; in dorsal aspect and in profile with distinct constriction between pronotum and elytron. Rostrum dorsally coarsely punctate-rugose, with distinct median ridge; with sparse rows of suberect setae; epistome indistinct, subglabrous. Pronotum with weak subapical constriction; disk coarsely punctate, interspaces reticulate; each puncture with erect, slender, curved scale. Elytra with striae deeply impressed; each puncture with erect, slender, curved scale; intervals costate, subglabrous. Meso- and metafemur with small tooth, profemur edentate. Metafemur subapically without stridulatory patch. Abdominal ventrite 5 flat, microreticulate, sparsely setose. Penis (Fig. 62b) hardly asymmetrical; tip medially weakly extended; basal orifice ventrally simple; apodemes shorter than body of penis (0.7 ×); ductus ejaculatorius with distinct bulbus. Intraspecific variation. Length 1.68-2.18 mm. Color as in holotype, or darker, with only antenna and tarsi ferruginous, remainder black. Female rostrum dorsally in apical 1/2 subglabrous, densely punctate; epistome simple.

Material examined.

Holotype (MZB): ARC2771 (GenBank # MK260400), N-Sulawesi Prov., Tomohon, Rurukan, Gn. Mahawu, 01°21.409'N 124°51.535'E, 1126 m, 14-V-2012. Paratypes (MZB, SMNK, ZSM): N-Sulawesi: 2 exx, ARC2777 (GenBank # MK260394), ARC2778 (GenBank # MK260395), Airmadidi, Gn. Klabat, 01°26.505'N 125°00.636'E, 923 m, 16-V-2012, sifted; 12 exx, ARC6056 (GenBank # MK260399), ARC6057 (GenBank # MK260401), Airmadidi, Gn. Klabat, 01°26.430' N 125°00.622'E, 889 m, sifted, 17-V-2012; 1 ex, Airmadidi, Gn. Klabat, 01°26.619'N 125°00.805'E, 1018 m, sifted, 17-V-2012; 7 exx, ARC2781 (GenBank # MK260396), ARC2782 (GenBank # MK260397), ARC2783 (GenBank # MK260398), Airmadidi, Gn. Klabat, 01°26.635'N 125°00.823'E, 1031 m, 16-V-2012, sifted; 5 exx, ARC0323 (EMBL # LN884929), ARC0324 (GenBank # MK260402), ARC0325 (GenBank # MK260403), ARC0326 (EMBL # HG939575), Bitung, Gn. Dua Saudara, 01°29.417'N 125°09.150'E, 950 m, 24-VI-2006, sifted; 3 exx, ARC0350 (GenBank # MK260404), Bitung, Gn. Dua Saudara, 750 m, 24-VI-2006, sifted.

Distribution.

N-Sulawesi Prov. (Tomohon, Gn. Klabat, Bitung). Elevation 750-1130 m.

Biology.

In leaf litter of montane forest.

Etymology.

This epithet is the Latin noun pauper (poor man).

Notes.

Trigonopterus pauper Riedel, sp. n. was coded as " Trigonopterus sp. 427".