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Holotype, male (Fig. 48a). Length 2.98 mm. Color of antennae and legs ferruginous; remainder black with slight bluish luster. Body subovate; in dorsal aspect with weak constriction between pronotum and elytron, in profile dorsally convex. Rostrum dorsally with median carina and pair of distinct sublateral ridges; interspaces with sparse rows of erect piliform scales; epistome short, posteriorly with transverse ridge, with median denticle and pair of larger lateral denticles. Eyes with dorsal margin bordered by furrow. Pronotum with disk densely punctate, partly reticulate; median line glabrous. Elytra irregularly punctate with small punctures, subapically with few deeper punctures; some striae marked by fine hairlines. Femora edentate; anteroventral ridge distinct, simple. Metafemur with dorsoposterior ridge denticulate, subapically with stridulatory patch, anterior surface coarsely rugose-punctate, each puncture with slender subrecumbent to suberect scale. Abdominal ventrites 1–2 concave, subglabrous, microreticulate, with sparse erect scales; ventrite 5 flat, coarsely punctate, sparsely setose. Penis (Fig. 48b) with body subparallel, apex subangulate, medially sparsely setose; apodemes 2.6 × as long as body of penis; transfer apparatus flagelliform, 1.7 × longer than body of penis; ductus ejaculatorius without bulbus.
Holotype (MZB): ARC3234 (EMBL # LN884978), S-Sulawesi Prov., Mangkutana, 02°20.203'S 120°46.878'E, 903 m, sifted, 14-V-2013.
S-Sulawesi Prov. (Mangkutana). Elevation ca. 900 m.
In leaf litter of montane forest.
This epithet is a Latinized adjective based on the type locality.
Trigonopterus mangkutanensis Riedel, sp. n. was coded as “Trigonopterus sp. 470”.
- Riedel, A; Narakusumo, R; 2019: One hundred and three new species of Trigonopterus weevils from Sulawesi ZooKeys, (828): 1-153. doi