Trigonopterus pseudovatulus Riedel

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

69. Trigonopterus pseudovatulus Riedel sp. n.

Diagnostic description.

Holotype, male (Fig. 69a). Length 2.35 mm. Color of antennae and tarsi ferruginous; remainder black. Body subovate; in dorsal aspect with weak constriction between pronotum and elytron; in profile dorsally convex. Rostrum dorsally with median costa and pair of submedian ridges, weakly microreticulate; intervening furrows with sparse rows of narrow, recumbent scales; epistome in apical 1/3 indistinct, weakly swollen, subglabrous, with sparse setae. Pronotum with disk punctate with small punctures; interspaces subglabrous, weakly microreticulate. Elytra with striae marked by rows of small punctures; intervals subglabrous; near base with few additional, slightly larger punctures. Femora edentate; anteroventral ridge distinct, ending in apical 1/3; anterior surface densely punctate, microreticulate, each puncture with narrow recumbent scale. Metafemur subapically with extensive stridulatory patch. Metatibia with dorsal edge weakly denticulate, with supra-uncal tooth. Abdominal ventrites 1-2 weakly concave, subglabrous; ventrite 5 with shallow impression, densely punctate, covered with small suberect scales. Penis (Fig. 69b) with body subparallel, apex with subangulate extension, without setae; apodemes 2.7 × as long as body of penis; transfer apparatus complex, asymmetrical, with subrotund capsule; ductus ejaculatorius without bulbus. Intraspecific variation. Length 1.76-2.60 mm. Body of females more slender. Female rostrum dorsally with submedian row of punctures, with sublateral furrow.

Material examined.

Holotype (MZB): ARC3128 (GenBank # MK260601), C-Sulawesi Prov., Pendolo, Gn. Sampuraga, 02°15.407'S 120°47.051'E, 1406 m, beaten, 16-V-2013. Paratypes (MZB, SMNK): 3 exx, ARC3129 (GenBank # MK260600), ARC3130 (GenBank # MK260599), ARC6009 (GenBank # MK260593), ARC6033 (GenBank # MK260606), same data as holotype; 1 ex, ARC2864 (GenBank # MK260594), C-Sulawesi Prov., Pendolo, Gn. Sampuraga, 02°15.407'S 120°47.051'E, 1406 m, beaten, 31-V-2012; 344 exx, ARC3095 (GenBank # MK260605), ARC3096 (GenBank # MK260604), ARC3097 (GenBank # MK260603), ARC3098 (GenBank # MK260602), ARC5978 (PCR failed), ARC5979 (GenBank # MK260598), ARC5980 (PCR failed), ARC5981 (GenBank # MK260597), ARC5982 (GenBank # MK260596), ARC5983 (GenBank # MK260595), S-Sulawesi Prov., Mangkutana, 02°20.306'S 120°46.792'E to 02°20.203'S 120°46.878'E, 850-910 m, beaten, 14-V-2013.

Distribution.

S-Sulawesi Prov. (Mangkutana), C-Sulawesi Prov. (Pendolo). Elevation 910-1400 m.

Biology.

On foliage in montane forests.

Etymology.

This epithet is a Latinized adjective based on the Greek prefix pseudo- (false) and the name of T. ovatulus Riedel, sp. n., a sibling species.

Notes.

Trigonopterus pseudovatulus Riedel, sp. n. was coded as " Trigonopterus sp. 534". This species is very closely related to T. ovatulus Riedel, sp. n., from which it cannot be separated by morphological characters. It differs by ca. 17.1-17.3% p-distance of cox1, correlated by marked differences in the nuclear genes 28S and CAD.