Trigonopterus tounensis
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus tounensis Narakusumo & Riedel, 2021 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype. Male (Fig. 27a). Length 2.58 mm. Color of antennae ferruginous; remainder black. Body subovate; in dorsal aspect with weak constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with median costa and pair of submedian ridges; intervening furrows each with sparse row of erect scales; epistome subglabrous with sparse suberect setae, posteriorly with five denticles. Pronotum with disk densely punctate with coarse punctures; almost reticulate, interspaces subglabrous; each puncture containing single, minute seta; medially with impunctate line. Elytra densely irregularly punctate with small punctures; striae indistinct; interspaces between punctures subglabrous; striae 7–9 with larger punctures; stria 8 along humerus with seven large, coarse punctures. Femora edentate, anteroventral ridge simple; anterior surface densely coarsely punctate, each puncture with suberect scale. Metafemur with dorsoposterior edge weakly denticulate; subapically with stridulatory patch; dorsally with rows of silvery scales. Posterior face of metatibia in apical 1/2 with dense yellowish setae. Abdominal ventrites 1–2 concave, densely punctate with coarse punctures and sparse erect scales, sublaterally each with blunt tooth; in profile ventrite 2 subangularly projecting; ventrite 5 densely coarsely punctate, with median impression. Penis (Fig. 27b) with sides of body subparallel; apex with short median angulate extension, with sparse setae; apodemes 2.9× as long as body; transfer apparatus complex; ductus ejaculatorius with distinct bulbus. Intraspecific variation. Length 2.38–2.58 mm. Female rostrum flat, dorsally with median costa and row of punctures, and pair of submedian costae; epistome simple, subglabrous with sparse punctures and suberect setae. Female abdominal ventrites 1–2 with shallow impression, surface with sparse coarse punctures; ventrite 5 flat, with dense punctures and suberect setae.
Material examined
Holotype (MZB, Cole.173.079): MZB0110 (GenBank OK481910), Indonesia, C-Sulawesi, Tojo Una-Una, Ulubongka, Mire, Gn. Katopasa, 01°11.31'S, 121°27.348'E, 1380 m, 23–24-VII-2017, beaten. Paratype (MZB, SMNK): 3 exx, MZB0111 (GenBank OK481909), same data as holotype.
Distribution
C-Sulawesi Prov. (Mt Katopasa). Elevation ca. 1380 m.
Biology
On foliage in montane forest.
Etymology
This epithet is a Latinized adjective based on the Indonesian abbreviation of Tojo Una-Una “Touna” and refers to the type locality.
Notes
Trigonopterus tounensis, sp. nov. was coded as “Trigonopterus sp. 1115” (Narakusumo et al. 2020[1]). This species belongs to the T. posoensis-group. It is closely related to T. obelix Riedel, which differs by 15.2–16% cox1 p-distance.
Original Description
- Narakusumo, R; Riedel, A; 2021: Twenty-eight new species of Trigonopterus Fauvel (Coleoptera, Curculionidae) from Central Sulawesi ZooKeys, 1065: 29-79. doi
Images
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Other References
- ↑ Narakusumo R, Riedel A, Pons J (2020) Mitochondrial genomes of twelve species of hyperdiverse Trigonopterus weevils. PeerJ 8: e10017. https://doi.org/10.7717/peerj.10017
