Trigonopterus procurtus Riedel

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

66. Trigonopterus procurtus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 66a). Length 1.78 mm. Color of antennae ferruginous; 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 level of antennal insertion with shallow lateral constriction, dorsally with median ridge; dorsolaterally with rows of erect yellow scales; epistome simple, subglabrous. Pronotum with distinct subapical constriction bordered by row of yellowish scales; disk with scattered coarse punctures and recumbent yellowish scales; interspaces microreticulate, dull. Elytra sparsely punctate with small punctures, with sparse yellowish or white recumbent scales; interspaces microreticulate, dull; striae indistinct, some obsolete. Femora with indistinct anteroventral ridge ending with indistinct blunt tooth. Metafemur subbasally curved, dorsally rounded, subapically without stridulatory patch. Dorsal edge of tibiae irregularly microdenticulate. Abdominal ventrite 1 concave, subglabrous, sparsely punctate, with few scattered piliform scales; ventrite 5 flat, subapically with weak depression, subglabrous. Penis (Fig. 66b) with sides of body weakly converging to subangulate apex, with sparse thin setae; apodemes 1.8 × as long as body of penis; transfer apparatus flagelliform, 1.4 × longer than body of penis; ductus ejaculatorius without bulbus. Intraspecific variation. Length 1.78-1.79 mm.

Material examined.

Holotype (MZB): ARC2892 (GenBank # MK260392), N-Sulawesi Prov., Kotamobagu, Modoinding, Lake Moat area, 00°42.862'N 124°28.356'E, 1024 m, sifted, 19-V-2012. Paratype (SMNK): 1 ex, ARC2893 (GenBank # MK260391), same data as holotype.

Distribution.

N-Sulawesi Prov. (Lake Moat area). Elevation ca. 1020 m.

Biology.

In leaf litter of montane forest.

Etymology.

This epithet is a combination of the Latin prefix pro- (before) and the name of T. curtus (Voss). Presumably, this species represents an early offshoot from the T. curtus -species-group. A variable adjective.

Notes.

Trigonopterus procurtus Riedel, sp. n. was coded as " Trigonopterus sp. 420".