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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.
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.
S-Sulawesi Prov. (Mangkutana), C-Sulawesi Prov. (Pendolo). Elevation 910–1400 m.
On foliage in montane forests.
This epithet is a Latinized adjective based on the Greek prefix pseudo- (false) and the name of Trigonopterus ovatulus Riedel, sp. n., a sibling species.
Trigonopterus pseudovatulus Riedel, sp. n. was coded as “Trigonopterus sp. 534”. This species is very closely related to Trigonopterus 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.
- Riedel, A; Narakusumo, R; 2019: One hundred and three new species of Trigonopterus weevils from Sulawesi ZooKeys, (828): 1-153. doi