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Holotype, male (Fig. 59a). Length 2.88 mm. Color of antennae and tarsi ferruginous; remainder black. Body subovate; in dorsal aspect and in profile with very weak constriction between pronotum and elytron. Rostrum dorsally with median carina and pair of submedian ridges; intervening furrows with rows of subrecumbent yellowish scales; epistome indistinct, somewhat subglabrous, sparsely setose. Pronotum with disk densely punctate; interspaces between punctures subglabrous, subequal to punctures´ diameter; each puncture with fine, recumbent seta; median line impunctate. Elytra irregularly punctate with small punctures; interspaces subglabrous; some striae marked by fine hairlines. Femora dentate with acute tooth; anterior surface coarsely punctate, each puncture with narrow recumbent scale. Metafemur subapically with stridulatory patch. Metatibia clavate, in apical 1/2 widened, in apical 1/3 ventrally with brush of long setae. Metaventrite medially with short median carina. Abdominal ventrites 1–2 concave, sublaterally covered with erect plumose scales; ventrite 5 at middle with shallow concavity, sublaterally with patches of erect scales. Penis (Fig. 59b) with body differentiated into lateral struts and sinuate inner frame, apex subangulate; apodemes 2.1 × as long as body of penis; transfer apparatus complex; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.74–2.88 mm. Female rostrum dorsally subglabrous, with submedian and sublateral rows of punctures. Female metatibia apically less swollen, without brush of long setae. Female abdominal ventrites 1–2 weakly concave, without erect plumose scales; female abdominal ventrite 5 flat, densely punctate, with scattered minute scales.
Holotype (MZB): ARC3192 (GenBank # MK260414), S-Sulawesi Prov., Selayar Is, Pagarangan, 06°18.334'S 120°30.794'E, 545 m, beaten, 24-IV-2013. Paratypes (MZB, SMNK): S-Sulawesi Prov., Selayar Is: 20 exx, ARC3193 (GenBank # MK260416), ARC3194 (GenBank # MK260413), same data as holotype; 3 exx, ARC3195 (GenBank # MK260415), Bahorea, 06°20.484'S 120°30.127'E, 368 m, beaten 25-IV-2013.
S-Sulawesi Prov. (Selayar Is). Elevation 370–545 m.
On foliage in lowland forests.
This epithet is a Latinized adjective based on the type locality.
Trigonopterus pagaranganensis Riedel, sp. n. was coded as “Trigonopterus sp. 472”.
- Riedel, A; Narakusumo, R; 2019: One hundred and three new species of Trigonopterus weevils from Sulawesi ZooKeys, (828): 1-153. doi