Trigonopterus tenuipes Riedel

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

96. Trigonopterus tenuipes Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 96a). Length 2.00 mm. Color of antennae yellowish; legs and rostrum dark ferruginous; remainder black. Body subovate; in dorsal aspect with weak constriction, in profile with distinct constriction between pronotum and elytron. Rostrum long; at basal 1/3 with constriction; dorsally with median costa and pair of submedian ridges; intervening furrows with rows of punctures containing each one indistinct seta; epistome indistinct, with median ridge. Pronotum with disk densely, coarsely punctate; interspaces between punctures reticulate, subglabrous. Elytra coriaceous, striae deeply impressed, dorsally intervals costate; sutural interval basally curving laterad; laterally striae marked by rows of coarse punctures. Legs long. Profemur with anteroventral ridge simple; meso- and metafemur with indistinct denticle in apical 1/3; anterior surface of femora coarsely punctate, reticulate, weakly microreticulate. Metafemur subapically with stridulatory patch. Abdominal ventrite 1 microreticulate, concave, at middle with coarse punctures; ventrite 5 microreticulate, with shallow concavity, laterally weakly rugose. Penis (Fig. 96b) with sides subparallel, in apical 1/3 weakly converging; subapically with lateral fringes of setae; subtruncate apex nude, with median notch; apodemes 1.3 × as long as body of penis; transfer apparatus short spiniform, directed basad in repose; ductus ejaculatorius with indistinct bulbus. Intraspecific variation. Length 2.00-2.22 mm. Female rostrum with lateral and sublateral rows of punctures, medially with glabrous costa.

Material examined.

Holotype (MZB): ARC2761 (GenBank # MK260323), N-Sulawesi Prov., Tomohon, Rurukan, Gn. Mahawu, 01°20.844'N 124°52.253'E to 01°20.751'N 124°52.129'E, 1209-1305 m, beaten, 15-V-2012. Paratypes (MZB, SMNK): N-Sulawesi Prov.: 3 exx, ARC2758 (GenBank # MK260325), ARC2759 (GenBank # MK260324), Tomohon, Rurukan, Gn. Mahawu, 01°21.409'N 124°51.535'E to 01°21.370'N 124°51.676'E, 1126-1231 m, beaten, 14-V-2012.

Distribution.

N-Sulawesi Prov. (Tomohon). Elevation ca. 1130-1210 m.

Biology.

On foliage in montane forests.

Etymology.

This epithet is a combination of the Latin adjective tenuis, -e (thin) and the noun pes (foot, leg). It refers to the species´ long, slender legs.

Notes.

Trigonopterus tenuipes Riedel, sp. n. was coded as " Trigonopterus sp. 405".