Asiodonus chaunriensis Legalov, 2024

Legalov, Andrei A., 2024, A new species of the genus Asiodonus Legalov, 2010 (Coleoptera, Curculionidae) from India, Baltic Journal of Coleopterology (Vienna, Austria: 1996) 24 (2), pp. 231-234 : 232-233

Asiodonus chaunriensis Legalov , sp. nov.

( Fig. 1 )

Type material: Holotype. Female ( ISEA), India, Uttarakhand, 5 km WSW of Trijugi Narayan Vill., NW Chaunri Mt. , alpine zone, 30°38'N, 78°55'E, 3500-3700 m, 14- 15.IV.2012, R. Dudko & I. Luybechanskii.

Description. Female: Body brownish, covered with more or less decumbent hairlike scales. Antennae, tibiae and tarsi redbrown. Rostrum quite long, slightly curved, without middle carina, densely punctate, flattened and glabrous in apical third, two times as long as wide at apex, about 2.1

232 times as long as wide in middle and 1.9 times as long as wide at base, about 0.7 times as short as pronotum. Mandibles massive with two teeth on inner edge. Forehead flattened, densely punctate, 0.8 times as long as rostrum base width, covered with narrow scales. Eyes large, finely faceted, transversely oval, weakly convex. Antennae long, inserted before apex of rostrum. Scapus long, 7.5 times as long as wide at apex. Antennomeres 2 and 3 long-conical. Antennomere 2 about 2.9 times as long as wide at apex, about 0.3 times as long as and about 0.9 times as narrow as scape. Antennomere 3 2.5 times as long as wide at apex, 0.8 times as long as and about 0.9 times as narrow as antennomere 2. Antennomeres 4-6 subequal in width. Antennomeres 4-8 conical. Antennomere 4 about 1.1 times as long as wide at apex, 0.5 times as long as and slightly wider than antennomere 3. Antennomere 5 equal in length and width, about 0.9 times as long as antennomere 4. Antennomere 6 equal to antennomere 5. Antennomere 7 about 0.8 times as long as wide at apex, about 0.9 times as long as and about 1.1 times as wide as antennomere 6. Antennomere 8 0.6 times as long as wide at apex, equal in length and about 1.3 times as wide as antennomere 7. Club compact, two times as long as wide in middle. Pronotum almost companiform, slightly longer than wide at apex, about 0.8 times as long as wide in middle, and about 0.9 times as long as wide at base. Greatest width in middle. Disk densely punctate, weakly convex. Sides almost straight. Scutellum indistinct. Elytra suboval, about 1.9 times as long as wide at base, about 1.5 times as long as wide in middle, about 2.0 times as long as wide at apex, about 3.0 times as long as pronotum. Humeri smoothed. Greatest width in middle. Interstriae wide, flattened, densely punctate. Striae distinct. Prosternum with stark postocular lobes. Procoxal cavities rounded and contiguous. Pre- and postcoxal portions of prosternum very short. Postcoxal portion about 1.3 times as long as precoxal portion. Mesosternal process not produced anteriorly. Mesocoxal cavities separated. Metaventrite short, slightly shorter than length of metacoxal cavity. Metanepisterna narrow, punctate. Abdomen weakly convex. Abdominal ventrites 1 and 2 fused, equal in length. Ventrite 1 about 1.3 times as long as metacoxal cavity. Ventrites 3 and 4 quite short. Ventrite 3 0.8 times as long as ventrite 2. Ventrite 4 slightly shorter than ventrite 3. Ventrite 5 weakly impressed, about 1.6 times as long as ventrite 4. Pygidium hidden by elytra. Legs long. Femora widened. Tibiae weakly biconcave, with apical comb of thickened brown setae and distinct mucro. Tarsi long. Tarsomeres 1-3 with pulvilli on lower surface. Tarsomeres 1 and 2 conical. Tarsomere 2 shorter than tarsomere 1. Tarsomere 3 bilobed. Claws long and free. Total body length (without rostrum) 5.4 mm. Length of rostrum 0.9 mm.

Diagnosis. The new species is closely related to Asiodonus solidus (Petri, 1901) from Middle Asia but differs in the prosternum with strong postocular lobes, relatively straight sides of the pronotum, and a mesosternal process that is not produced anteriorly.

Etymology. From location Chaunri.

Distribution. India: Uttarakhand.

Figures

Fig. 1. Asiodonus chaunriensis sp. nov., holotype, female: a – habitus, dorsally; b – sternite 8; c – spermatheca; d – abdomen. Scale bar = 1.0 mm for a, b, 0.5 mm for b, c.