Trigonopterus tanah
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus tanah Narakusumo & Riedel, 2021 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype. Male (Fig. 23a). Length 2.13 mm. Color of antennae yellowish; legs ferruginous; remainder black. Body subovate; in dorsal aspect with weak constriction, in profile with marked constriction between pronotum and elytron. Rostrum dorsally with median costa and pair of submedian ridges; intervening furrows filled with rows of coarse punctures containing each one indistinct seta; epistome simple, subglabrous. Pronotum with disk dorsally swollen, densely coarsely punctate-reticulate; interspaces between punctures subglabrous. Elytra with striae impressed, with dense rows of deep punctures; sutural interval with row of minute punctures, other intervals subglabrous, costate; basal margin bordered by transverse row of punctures. Profemur with anteroventral ridge simple; meso- and metafemur with denticle in apical 1/2; anterior surface of femora with longitudinal wrinkles, weakly punctate. Metafemur subapically with stridulatory patch. Abdominal ventrites 1–2 microreticulate, concave, with coarse punctures; ventrite 5 almost flat, microreticulate, sparsely punctate. Penis (Fig. 23b) with sides of body subparallel; apex rounded, sublaterally with sparse setae; apodemes 2.3 X as long as body of penis; transfer apparatus dentiform, directed basad in repose, flanked by pair of small sclerites; ductus ejaculatorius with indistinct bulbus.
Material examined
Holotype (MZB, Cole.173.056): MZB0202 (GenBank OK481849), Indonesia, C-Sulawesi, Toli-Toli, Gn. Dako, 01°03.512'N, 120°54.054'E, 1100–1200 m, 13-VII-2018, sifted.
Distribution
C-Sulawesi Prov. (Mt Dako). Elevation ca. 1100–1200 m.
Biology
In leaf litter of montane forest.
Etymology
This epithet is the Indonesian word for “soil” and a noun in apposition. It refers to the species´ lifestyle on the ground among leaf litter.
Notes
Trigonopterus tanah sp. nov. was coded as “Trigonopterus sp. 1234”. It is closely related to T. darwini Riedel, from which it can be distinguished by its coarser sculpture, and the subparallel body of the penis. The cox1 p-distance of both species is 10.8%.
Original Description
- Narakusumo, R; Riedel, A; 2021: Twenty-eight new species of Trigonopterus Fauvel (Coleoptera, Curculionidae) from Central Sulawesi ZooKeys, 1065: 29-79. doi
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