Trigonopterus obelix
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Ordo: Coleoptera
Familia: Curculionidae
Genus: Trigonopterus
Name
Trigonopterus obelix Riedel sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnostic description
Holotype, male (Fig. 56a). Length 2.65 mm. Color of antennae ferruginous; legs dark ferruginous; remainder black. Body broadly subovate; in dorsal aspect with weak constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with median and pair of submedian carinae; intervening furrows each with row of erect scales; epistome with one median denticle and two pairs of submedian / sublateral denticles. Pronotum with disk densely punctate with coarse, almost confluent punctures; each puncture containing a single seta; narrow interspaces subglabrous; medially with indistinct costa. Elytra densely irregularly punctate with small punctures; striae indistinct; interspaces between punctures subglabrous; striae 7–9 with larger punctures; stria 8 along humerus with 5 large, coarse punctures. Femora edentate; anterior surface densely coarsely punctate, each puncture with suberect scale. Metafemur with dorsoposterior edge denticulate; subapically with stridulatory patch. Posterior face of metatibia in apical 1/2 with dense yellowish setae. Abdominal ventrites 1–2 concave, subglabrous, microreticulate, with sparse coarse punctures, sublaterally each with blunt tooth; in profile ventrite 2 subangularly projecting; ventrite 5 with median impression bordered by submedian carinae; medially punctate, interspaces subglabrous. Penis (Fig. 56b) with sides of body subparallel; apex subangulate medially rounded, without setae; apodemes 2.9 × as long as body; transfer apparatus complex, symmetrical; ductus ejaculatorius extremely long, with distinct bulbus. Intraspecific variation. Length 2.48–2.75 mm. Female rostrum slender, dorsally in apical 1/2 subglabrous, with submedian row of punctures and sublateral pair of furrows; in basal 1/2 with median and pair of submedian glabrous costae; epistome simple. Female abdominal ventrite 5 flat.
Material examined
Holotype (MZB): ARC2817 (GenBank # MK260203), S-Sulawesi Prov., Pc. Palopo, Gn. Sampuna, 02°56.539'S 120°05.320'E to 02°56.545'S 120°05.595'E, 1038–1101 m, beaten, 29-V-2012. Paratypes (MZB, SMNK, ZSM): S-Sulawesi Prov., Pc. Palopo, Gn. Sampuna: 46 exx, ARC2818 (GenBank # MK260202), ARC2819 (EMBL # LN884932), same data as holotype; 18 exx, Pc. Palopo, Gn. Sampuna, 02°56.539'S 120°05.320'E, 1038 m, sifted, 29-V-2012; 15 exx, 02°56.539'S 120°05.320'E to 02°56.545'S 120°05.595'E, 1038–1101 m, beaten, 02-V-2013; 11 exx, ARC2840 (GenBank # MK260201), ARC2841 (GenBank # MK260200), 02°56.545'S 120°05.595'E, 1101 m, sifted, 29-V-2012; 23 exx, 02°56.545'S 120°05.595'E, 1101 m, sifted, 02-V-2013.
Distribution
S-Sulawesi Prov. (Pc. Palopo). Elevation 1040–1100 m.
Biology
On foliage in montane forests, but also in leaf litter.
Etymology
This epithet is based on a character of the French Asterix comics. It is a noun in apposition.
Notes
Trigonopterus obelix Riedel, sp. n. was coded as “Trigonopterus sp. 376”. This species is closely related to Trigonopterus posoensis Riedel, sp. n., from which it differs by ca. 15.0–15.5% p-distance of cox1, and by the rounded profile of abdominal ventrite 2.
Original Description
- Riedel, A; Narakusumo, R; 2019: One hundred and three new species of Trigonopterus weevils from Sulawesi ZooKeys, (828): 1-153. doi
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