Trigonopterus gracilipes Riedel

Riedel, Alexander & Narakusumo, Raden Pramesa, 2019, One hundred and three new species of Trigonopterus weevils from Sulawesi, ZooKeys 828, pp. 1-153 : 1

25. Trigonopterus gracilipes Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 25a). Length 1.82 mm. Color of antennae yellowish; legs ferruginous; remainder black. Body subovate; in dorsal aspect with weak constriction, in profile with distinct constriction between pronotum and elytron. Rostrum long; at middle with gentle constriction; dorsally with median and pair of submedian, somewhat irregular ridges; intervening furrows with punctures and sparse indistinct setae; epistome posteriorly with angulate ridge bearing median and pair of sublateral denticles. Pronotum with disk densely, coarsely punctate; interspaces between punctures reticulate, subglabrous. Elytra with punctures large, deeply impressed; dorsally intervals dorsally costate, subglabrous; sutural interval basally curving laterad. Legs long, almost spider-like. Femora with very indistinct anteroventral ridge ending with minute denticle; anterior and dorsal surface punctate-rugose, with longitudinal wrinkles. Metafemur subapically with stridulatory patch. Abdominal ventrites 1-2 dull, microreticulate, with coarse punctures; ventrite 5 flat, microreticulate, dull. Penis (Fig. 25b) with body curved ventrad, in basal 1/2 sides subparallel, converging to acute apex; subapically with fringe of long setae; basal orifice with well-sclerotized ventral rim; apodemes 2.1 × as long as body of penis; transfer apparatus indistinct; ductus ejaculatorius with indistinct bulbus.

Material examined.

Holotype (MZB): ARC2881 (GenBank # MK260366), N-Sulawesi Prov., Kotamobagu, Matalibaru, 00°32.445'N 124°14.185'E, 956 m, beaten, 20-V-2012.

Distribution.

N-Sulawesi Prov. (Kotamobagu). Elevation ca. 960 m.

Biology.

On foliage in montane forests.

Etymology.

This epithet is a combination of the Latin adjective gracilis (slender) and the noun pes (foot, leg). It refers to the species´ long, slender legs. A noun in apposition.

Notes.

Trigonopterus gracilipes Riedel, sp. n. was coded as " Trigonopterus sp. 414".