Donus herteshensis Legalov, 2008

Legalov, Andrei A., 2008, New species of the genus Donus Jekel (Coleoptera, Curculionidae) from Tuva, Baltic Journal of Coleopterology 8 (1), pp. 55-58 : 56-57

Donus herteshensis Legalov , sp.n. ( figs. 1-3 )

Holotype. Male (ZMN), Tuva, Akademika Obrucheva Mts. , Hertesh-Taiga Mtn., 25 km NNE of Kyzyl, 2200-2400 m, tundra, 19-21.VI.2001, R. & A. Dudko, I. Ljubechansky . Paratype. Female (ZMN), idem.

Description. Body length 6.5 mm. Body black, with rarely piliform scales. Light scales form two longitudinal strips on sides of the pronotum, stain on humeri, stains on 1st interval of the elytra in the top quarter, it condensed on meso- and metathorax, episternum and abdomen.

MALE: Rostrum short, thick, weakly curved, with middle carina, largely punctate, smooth at apex, 2.73 times as long as wide, 1.1 times as short as pronotum. Antennae located in topmost quarter of rostrum. Forehead narrow, flat, punctate. Eyes large, weakly convex. Temples short. Antennae long. Scapus long, not reaching the little eyes. First and 2nd segments long trapezoid, 3rd and 4th shortly trapezoid, 5th and 6th triangular, 7th wide triangular. Clava compact, fusiform. Pronotum 1.24 times as wide as long, back trapezoid, with the greatest width before the apex, lustrous, densely punctate, punctures small. Sides almost straight. Scutellum very small, elongated. Elytra long oval, 1.35 times as long as wide. Humeri weakly convex. Greatest width on the middle. Intervals wide, flat, densely punctate. Striae deep. Points in striae large. Thorax and abdomen with small punctures. Coxal cavity located on the prothorax middle. Metepisternum narrow.Abdomen weakly convex. Legs long. Femora widened. Tibiae weakly biconcave, expanded at apex, on internal edge with aciculiform setae. Protibiae with mucro. Tarsi long. Protarsi shorter and wider than meso- and metatarsi. First and 2nd segments of protarsi wide triangular, 3rd segment wide bilobed. Clausal segment elongated. Claws long. First segment of mesotarsi triangular, 2nd segment wide triangular, 3rd segment wide bilobed. First segment of metatarsi long triangular, 2nd segment triangular, 3rd segment bilobed.

FEMALE: Body length 7.1 mm. Similar characteristics to those described in the male but rostrum thinner, 3 times as long as wide, 1.23 times as short as pronotum. Pronotum extends to apex more weakly, 1.13 times as wide as long. Elytra wider and more strongly convex, 1.34 times as long as wide. Abdomen stronger convex.

Diagnosis. This new species is similar to Donus burjaticus Korotyaev, 1998 from East Sayan mountains but can be distinguished by the more rarely scales on dorsal surface, more thin rostrum, narrower forehead, narrower pronotum with stronger widened to apex, wider apex of the aedeagus.

Etymology. The name is related to the type locality “Hertesh-Taiga Mtn.”

Distribution. Siberia (Tuva).

Figures

Figs. 1-3. Donus herteshensis (dorsally): 1 - male, 2- aedeagus, 3 - female.