Trigonopterus pomberimbensis
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus pomberimbensis Narakusumo & Riedel, 2021 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype. Male (Fig. 16a). Length 1.98 mm. Color of antennae and tarsi ferruginous; remainder black. Body subovate; in dorsal aspect and in profile with weak constriction between pronotum and elytron. Rostrum dorsally with median and pair of submedian ridges; intervening furrows with sparse rows of suberect setae; epistome indistinct, subglabrous. Pronotum with disk densely punctate; interspaces between punctures subglabrous, subequal or smaller than punctures´ diameter; laterally punctures coarse. Elytra with striae marked by weakly impressed rows of punctures; intervals subglabrous, with interspersed punctures. Femora with anteroventral ridge weakly crenate, ending with small acute tooth; anterior surface coarsely punctate, microreticulate. Metafemur with dorsoposterior edge simple; subapically with extended stridulatory patch. Metatibia ventrally with row of thin, erect setae. Abdominal ventrites 1–2 concave, densely punctate with coarse punctures and sparse plumose scales, interspaces microreticulate; ventrite 5 densely covered with erect to suberect plumose scales. Penis (Fig. 16b) with sides of body subparallel; apex subangular, medially extended into small tooth; with few long setae; apodemes 2.2× as long as body of penis; transfer apparatus spiniform, directed basad, held by anchor-shaped sclerites; ductus ejaculatorius without distinct bulbus. Intraspecific variation. Length 1.80–1.98. Female rostrum slender, dorsally subglabrous, with submedian row of punctures and sublateral furrows. Female abdominal ventrites 1–2 almost flat, with sparse suberect setae; ventrite 5 flat with sparse plumose scales.
Material examined
Holotype (MZB, Cole.173.069): MZB0132 (GenBank OK481902), 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: 5 exx, MZB0131 (GenBank OK481903), same data as holotype; 1 ex, 01°35.235'S, 120°55.679'E to 01°35.258'S, 120°55.588'E, 1900 m, 27-II-2020, beaten; 2 exx, MZB0153 (GenBank OK481885), 01°35.197'S, 120°55.658'E to 01°35.127'S, 120°55.622'E, 2000 m, 01-III-2020, beaten; 1 ex, 01°35.235'S, 120°55.679'E to 01°35.258'S, 120°55.588'E, 1900 m, 26–27-II-2020, beaten; 1 ex, MZB0143 (GenBank OK481894), 01°35.359'S, 120°55.643'E to 01°35.581'S, 120°55.385'E, 1900 m, 29-II-2020, sifted.
Distribution
C-Sulawesi Prov. (Mt Pompangeo). Elevation 1900–2000 m.
Biology
In leaf litter of montane forest.
Etymology
This epithet is a Latinized adjective based on Pomberimbe hill.
Notes
Trigonopterus pomberimbensis sp. nov. was coded as “Trigonopterus sp. 1191”. This species belongs to the T. barbipes-group. It is closely related to T. viduus Riedel, which differs by weakly impressed elytral striae and 19.7–21.2% 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
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