Trigonopterus toboliensis
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus toboliensis Narakusumo & Riedel, 2021 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype. Male (Fig. 25a). Length 2.90 mm. Color of antennae ferruginous, legs dark ferruginous, remainder black. Body subrhomboid; in profile dorsally convex. Rostrum with median and pair of submedian carinae; intervening furrows with rows of suberect scales; epistome indistinct, sparsely setose; profile in basal 1/3 dorsally swollen, markedly convex to forehead. Pronotum with disk densely punctate, interspace subglabrous; median line impunctate. Elytra irregularly punctate with small punctures; interspaces subglabrous; striae 2–6 marked by fine hairlines. Femora edentate; with anteroventral ridge crenulate. Metafemur dorsally with suberect silvery scales, dorsoposterior edge denticulate; subapically with stridulatory patch. Metatibia with dorsal edge very weakly denticulate, subapically with constriction. Abdominal ventrites 1–2 concave, subglabrous, almost impunctate, with sparse suberect scales; ventrite 5 flat, densely punctate, punctures with suberect scales, interspaces microreticulate. Penis (Fig. 25b) with sides of body subparallel, near middle body with lateral flanges; apex with median triangular extension, without setae; apodemes 2.2× as long as body of penis; transfer apparatus spiniform; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.90–3.09 mm. Female rostrum slender, in apical half dorsally subglabrous, with submedian row of punctures and sublateral furrows. Female ventrite 5 flat, sparsely punctate, subapically with sparse scales.
Material examined
Holotype (MZB, Cole.173.077): MZB0126 (GenBank OK481908), Indonesia, C-Sulawesi, Palu, Donggala – Toboli, Kebun Kopi, 00°43.256'S, 119°56.759'E, 850 m, 03-III-2020, beaten. Paratypes (MZB, SMNK): MZB0127 (GenBank OK481907), MZB0213 (GenBank OK481840), MZB0214 (GenBank OK481839), MZB0215 (GenBank OK481838), same data as holotype; 4 exx, ARC7157 (GenBank OK481769), Palu, Palolo, Kamarora, trail to waterfall, ca. 01°12.541'S, 120°09.648'E, 700 m, 23–27-VIII-1997, beaten.
Distribution
C-Sulawesi Prov. (Palu, Palolo). Elevation 700–850 m.
Biology
On foliage in montane forest.
Etymology
This epithet is a Latinized adjective based on Toboli village.
Notes
Trigonopterus toboliensis sp. nov. was coded as “Trigonopterus sp. 1192”. This species belongs to the T. toraja-group. It is closely related to T. ampanensis Riedel from which it differs by the shape and position of the lateral extensions of the penis and a cox1 p-distance of 14.5–14.7%.
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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