Trigonopterus satyrus Riedel

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

84. Trigonopterus satyrus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 84a). Length 2.24 mm. Color of antennae and legs ferruginous; remainder black. Body subovate; in dorsal aspect with weak constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with somewhat flattened median costa and pair of submedian costae; intervening furrows with sparse rows of recumbent setae; apical 1/3 subglabrous, with few punctures and with sparse setae. Pronotum with disk densely punctate with coarse punctures except along impunctate median line; interspaces between punctures subglabrous, microreticulate, subequal to or smaller than punctures´ diameter. Elytra with striae marked by punctures and fine hairlines; basal margin bordered by transverse row; intervals flat, microreticulate, with few interspersed punctures. Femora edentate; anteroventral ridges simple. Metafemur dorsally with sparse, recumbent, silvery scales; dorsoposterior edge simple; subapically with stridulatory patch. Metatibia ventrally with sparse row of setae. Abdominal ventrites 1-2 concave, subglabrous, sparsely punctate; ventrite 5 at middle with distinct, broadly ovate impression, densely punctate. Penis (Fig. 84b) with sides of body subparallel; apex subtruncate, with median angulate extension, with sparse setae; apodemes 1.8 × as long as body of penis; transfer apparatus spiniform, directed basad in repose, attached to anchor-shaped supporting sclerite; ductus ejaculatorius without bulbus. Intraspecific variation. Length 2.24-2.56 mm. Female rostrum slender, subglabrous, with two submedian rows of punctures, with pair of sublateral furrows.

Material examined.

Holotype (MZB): ARC3055 (EMBL # LN884955), S-Sulawesi Prov., Tanah Toraja, Bittuang, Gn. Karoa, 02°55.270'S 119°40.179'E to 02°55.032'S 119°40.365'E, 1800-2000 m, beaten, 10-V-2013. Paratype (SMNK): 1 ex, ARC3056 (GenBank # MK260542), same data as holotype.

Distribution.

S-Sulawesi Prov. (Tanah Toraja). Elevation ca. 1800-2000 m.

Biology.

On foliage in montane forests.

Etymology.

This epithet is the name of Satyrus, a forest-god of the train of Bacchus. It is treated as a noun in apposition.

Notes.

Trigonopterus satyrus Riedel, sp. n. was coded as " Trigonopterus sp. 516".