Trigonopterus unyil
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus unyil Narakusumo & Riedel, 2021 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype. Male (Fig. 28a). Length 1.52 mm. Color largely ferruginous; thorax, sides of elytra and patch at the middle of intervals 2–3 black. Body subovate; in dorsal aspect and in profile with moderate constriction between pronotum and elytron. Rostrum dorsally with dense coarse punctures, areolate-reticulate; with sparse suberect setae; epistome, subglabrous, apically with sparse setae, posteriorly with transverse angulate ridge forming median denticle. Pronotum subapically with weak constriction; disk coarsely punctate, reticulate; each puncture bearing a suberect, clavate, apicad directed, yellowish scale; medially with subglabrous costa, subapically shortened. Elytra with striae marked by rows of suberect subclavate scales; intervals costate, glabrous; basal margin bordered by simple ridge. Femora dentate; anterior surface dull, rugose, but without distinct punctures; with sparse suberect scales. Metafemur dorsally rounded; subapically with stridulatory patch. Abdominal ventrites 1–2 flat, dull, with coarse punctures, with sparse suberect scales; ventrite 5 flat, microreticulate, dull. Penis (Fig. 28b) with sides of body subparallel, towards apex rounded, medially pointed, with sparse setae; apodemes 2.1× as long as body of penis; transfer apparatus denticulate, held by pair of brace-shaped sclerites; ductus ejaculatorius with distinct bulbus. Intraspecific variation. Length 1.38–1.70. Female rostrum subglabrous, with submedian rows of punctures.
Material examined
Holotype (MZB, Cole.173.080): MZB0134 (GenBank OK481900), Indonesia, C-Sulawesi, Tojo Una-Una, Matako, Gn. Pompangeo, 01°35.235'S, 120°55.679'E to 01°35.258'S, 120°55.588'E, 1900 m, 27-II-2020, sifted. Paratypes (MZB, SMNK): Indonesia, C-Sulawesi, Tojo Una-Una, Matako, Gn. Pompangeo: 6 exx, MZB0135 (GenBank OK481899), same data as holotype; 4 exx, MZB0136 (GenBank OK481898), 01°35.197'S, 120°55.658'E to 01°35.127'S, 120°55.622'E, 2000 m, 01-III-2020, sifted.
Distribution
C-Sulawesi Prov. (Mt Pompangeo). Elevation ca. 1900–2000 m.
Biology
In leaf litter of montane forest.
Etymology
This epithet is a noun in apposition based on the Indonesian hand puppet character from “Si Unyil” TV series.
Notes
Trigonopterus unyil sp. nov. was coded as “Trigonopterus sp. 1196”. Presumably, this species belongs to the T. nanus-group.
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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