Trigonopterus tejokusumoi
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus tejokusumoi Narakusumo & Riedel, 2021 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype. Male (Fig. 24a). Length 2.90 mm. Color of antennae and tarsi 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 with sparse rows of suberect scales; epistome indistinct, subglabrous. Eyes medially approximate. Pronotum with disk densely punctate, laterally punctures larger; interspaces subglabrous. Elytra densely irregularly punctate with small punctures; striae indistinct; hardly visible; interspaces subglabrous; stria 8 along humerus with row of six coarse punctures. Femora edentate; anterior and dorsal surface coarsely punctate, reticulate, each puncture containing silvery elongate scale. Meso- and metafemur with anteroventral ridge crenate; metafemur subapically with stridulatory patch. Metatibia in apical half ventrally with fringe of long setae. Abdominal ventrites 1–2 concave, dull, with sparse punctures, each bearing suberect scale; ventrite 5 with shallow impression, microreticulate, dull, with sparse suberect scales. Penis (Fig. 24b) with sides of body subparallel; apex asymmetrical, obtuse median extension shifted to the left, with sparse setae; apodemes 2.1× as long as body of penis; transfer apparatus spiniform, supported by plate-like sclerite; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.38–3.00 mm. Female body more slender. Female rostrum slender, dorsally subglabrous, with submedian row of punctures and sublateral furrows. Female abdominal ventrite 5 flat, punctate, with suberect scales.
Material examined
Holotype (MZB, Cole.173.076): MZB0137 (GenBank OK481897), Indonesia, C-Sulawesi, Tojo Una-Una, Matako, Gn. Pompangeo, 01°35.215'S, 120°55.560'E to 01°35.079'S, 120°55.49'E, 1900 m, 28-II-2020, beaten. Paratypes (MZB, SMNK): Indonesia, C-Sulawesi, Tojo Una-Una, Matako, Gn. Pompangeo 7 exx, same data as holotype; 13 exx, MZB0139 (GenBank OK481895), MZB0206 (GenBank OK481847), 01°35.603'S, 120°55.437'E to 01°35.406'S, 120°55.547'E, 1800 m, 29-II-2020, beaten; 15 exx, MZB0266 (PCR failed), MZB0267 (PCR failed), MZB0268 (PCR failed), 01°35.359'S, 120°55.643'E to 01°35.581'S, 120°55.385'E, 1800 m, 29-II-2020, beaten; 8 exx, 01°35.264'S, 120°55.588'E to 01°35.339'S, 120°55.599'E, 1900 m, 27-II-2020, beaten; 12 exx, 01°35.264'S, 120°55.588'E to 01°35.339'S, 120°55.599'E, 1900 m, 26–27-II-2020, beaten; 4 exx, MZB0211 (GenBank OK481842), MZB0212 (GenBank OK481841), 01°35.074'S, 120°55.467'E to 01°35.154'S, 120°55.507'E, 1900 m, 28-II-2020, beaten; 26 exx, MZB0138 (GenBank OK481896), MZB0265 (GenBank OK481788), 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°35.197'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 1800–2000 m.
Biology
On foliage in montane forest.
Etymology
This species is named in honor of Slamet Tedjokoesoemo, pioneer of veterinary science in Indonesia and grandfather of the first author. An invariable genitive.
Notes
Trigonopterus tejokusumoi sp. nov. was coded as “Trigonopterus sp. 1200”. This species belongs to the T. barbipes-group. It is most closely related to T. barbipes Riedel, but differs by smaller and more irregular elytral punctures, a peculiar obtuse apex of the penis and a 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
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