Otiorhynchus altaipilosus Legalov, 2021

Legalov, Andrei A., 2021, A new species of the genus Otiorhynchus Germar, 1822 (Coleoptera: Curculionidae) from South-eastern Altai, Ecologica Montenegrina 47, pp. 28-32 : 29-30

Species: Otiorhynchus altaipilosus Legalov , sp. nov. ( Fig. 1 )

http://zoobank.org/ urn:lsid:zoobank.org:act:57D5F3AF-656F-4EA4-A8DE-1FAEFB011589

Type material: Holotype, female (ISEA), RUSSIA, Altai Republic, SE Altai, Kuray Mountains , 10 km NE of Kosh-Agach, 4 km SW of Tabozhok Mt., 2150-2300 m, 50.058° N, 88.792° E, 7-8.VI.2021, R.Yu. Dudko . Paratypes, 2 females, idem .

Description. Female: Body black, covered with semierect long yellowish setae. Antennae and legs redbrown. Rostrum short, almost straight, with distinct middle carina, coarsely punctate, 0.8-0.9 times as long as wide at apex, 0.9-1.2 times as long as wide in middle and 0.9-1.0 times as long as wide at base, 0.4 times as long as pronotum. Mandibles massive, with scar of deciduous process. Antennal scrobes located dorsally in first half of rostrum. Maxillae covered by large prementum. Forehead flattened, 0.7-0.9 times as narrow as rostrum base width, coarsely punctate. Eyes large, coarsely faceted, suboval, weakly convex, protruding from contour of head. Temples quite short. Antennae inserted subapically, long. Scapus long, weakly curved, about 8.6 times as long as wide at apex, not reaching middle of pronotum. Antennomeres 2 and 3 long-conical, equal in width. Antennomere 2 about 2.2 times as long as wide, about 0.2 times as long as and 0.9 times as narrow as antennomere 1. Antennomere 3 about 1.7 times as long as wide, 0.8 times as long as antennomere 2. Antennomeres 4 and 5 subconical, equal in width. Antennomere 4 1.4 times as long as wide, 0.7 times as long as and about 0.8 times as narrow as antennomere 3. Antennomere 5 1.2 times as long as wide, about 0.9 times as long as antennomere 4. Antennomeres 6 and 7 rounded, equal in width. Antennomere 6 about 0.7 times as long as wide, 0.5 times as long as and 0.9 times as wide as antennomere 6. Antennomere 7 equal in length and width, about 1.7 times as long as wide, about 1.1 times as long as antennomere 6. Antennomeres 7 and 8 equal in width. Antennomere 8 conical, 1.2 times as long as wide, about 1.2 times as long as antennomere 7. Club compact, about 3.0 times as long as wide, about 0.4 times as antennomeres 2-8 combined. Pronotum 1.4-1.5 times as long as wide at apex, 0.93-0.95 times as long as wide in middle, 1.1-1.3 times as long as wide or subequal to wide at base. Sides convex, rugose-punctate. Greatest width in middle. Disk quite coarsely rugose-punctate, with unpunctate middle longitudinal area. Distance between punctures almost subequal to diameter of them. Scutellum small, wide-triangular. Elytra suboval, 2.0-2.1 times as long as wide at base, 1.4 times as long as wide in middle, 2.2-2.4 times as long as wide at apex, 2.2-2.3 times as long as pronotum. Humeri smoothed. Greatest width in middle. Interstriae wide, 4.0-5.0 times as wide as striae, flattened, finely punctate, granulate subapically. Striae distinct, with slightly elongated, rather sparse punctures. Procoxal cavities contiguous and rounded. Pre- and postcoxal portions of prosternum short. Metaventrite slightly longer than metacoxal length, flattened, coarsely punctate, flattened in middle. Metanepisterna very narrow. Abdomen flattened, densely punctate. Ventrite 1 slightly shorter than length of metacoxal cavity. Ventrite 2 1.1 times as long as ventrite 1. Ventrites 3 and 4 equal in length. Ventrite 3 about 0.8 times as long as ventrite 2. Ventrite 5 about 1.5 times as long as ventrite 4. Pygidium completely covered by elytra. Legs long. Femora widened, with small teeth. Tibiae with apical comb of wide setae and mucro. Protibiae weakly biconcave on inner edge, widened at apex inward. Meso- and metatibiae weakly curved. Metatibial corbels open. Tarsi long. Tarsomeres 1-3 with pulvilli on lower surface. Tarsomere 1 long-conical, longer than tarsomere 2. Tarsomere 2 wide-conical. Tarsomere 3 bilobed, longer and wider than tarsomere 2. Tarsomere 4 short. Tarsomere 5 elongate. Claws long and free. Length of body: 4.3-5.2 mm. Length of rostrum: 0.5-0.8 mm.

Differential diagnosis. The new species is similar to O. populiger from Bayankhongor Province but differs from it in small teeth on the femora, the length of the rostrum is subequal to its width at the base, wider elytra, and the rugose-punctate pronotum.

Etymology. From Altai locality and the Latin pilosus (hairy).

Localisation. Kuray Mountains.

Remarks. The record of O. (M.) pupulliger species from South Tuva ( Korotyaev 1995) needs confirmation.

Figures

Figure 1. Otiorhynchus altaipilosus sp. nov., holotype, habitus, dorsal view. Scale bar for a = 1.0 mm.