Scolytus stepheni Mandelshtam & Petrov 2010

Description. Holotype. Male. Body length 4.6 mm, 2.1 times as long as wide Head black, faintly shining. Frons flat, longitudinally aciculate, its surface with fine pale hair-like setae; lateral parts of frons near eyes covered by denser and longer hair-like setae. Vertex deeply punctured. Antennae brown, antennal club nearly elliptical, its surface with short golden hair-like setae. Pronotum reddish-brown, nearly as long as wide, wider than its length. Sides of pronotum parallel for most of their length; gently rounded towards pronotal apex; constriction in apical portion of pronotum only weakly developed. Surface punctured, with punctures larger in frontal portion than in center of pronotal disk. Anterolateral angles of pronotum bear sparse long light hair-like setae. Elytra reddish-brown, faintly shining, as wide as pronotal base and 1.5 times as long as pronotum. Elytral base slightly elevated; scutellum triangular; impression near scutellum only poorly developed. Striae slightly impressed, strial punctures circular, closely placed; interstriae flat with smaller punctures than in striae and less closely placed. Subapical elytral constriction distinct. Prior to apex (in subapical constricted part) elytra with faint impression with irregularly set punctures. Pale sparse erect hair-like setae only visible near elytral apex. Abdomen reddish-brown, dull. First and second sternites darker than third, fourth and fifth sternites . All sternites with densely set round punctures. Posterior margins of third and fourth sternites with minute median tubercles. Lateral sides of fifth sternite clearly thickened on posterior margin and with carinate apex. Two strong tubercles developed on fifth sternite, their apices with brushes of densely set golden hair-like setae, the brushes not confluent at glabrous apical margin of abdomen. Legs reddish-brown, covered by golden hair-like setae. Female. Similar to male but can be distinguished by the larger size (4.9 mm), more convex frons and by less strongly developed “callous-like elevations” at 5-th sternite without hair-like brushes of setae.