Helibatus Mulsant & Rey, 1859

Iwan, Dariusz & Schimrosczyk, David, 2013, A second species of the genus Helibatus Mulsant & Rey, 1859 (Coleoptera: Tenebrionidae: Opatrina), Zootaxa 3626 (4), pp. 569-575 : 570

Genus Helibatus Mulsant & Rey, 1859

Helibatus Mulsant & Rey, 1859: 100 .—Mulsant & Rey 1860: 8; Seidlitz 1894: 410; Gebien 1938a: 93; 1938b: 395; Koch 1963: 30; Iwan 2001: 352; Iwan 2004: 739; Iwan & Schimrosczyk 2009: 264.

Type species: Helibatus morio Mulsant & Rey, 1859 , by monotypy.

Diagnostic characters. Body length: 8.7–11.8 mm. Pronotum length/breadth ratio 0.64–0.67, elytra length/ breadth ratio 1.26–1.33, length ratio elytra/pronotum 1.90–2.07, breadth ratio elytra/pronotum 1.01–1.03. Clypeus with deep emargination (ratio of length of clypeus/depth of emargination 2.00–2.08). Head and clypeus covered with tubercles, on the frons more elongate than on the clypeus. Genal canthus narrower to slightly wider than eyes. Distal antennomeres 7–11 widened, transverse. Mentum triangular with a pointed spike. Lateral parts of mentum small but visible. Terminal maxillary palpomere moderately widened, securiform.

Pronotum transverse, widest in the middle, regularly narrowed to the posterior angle. Posterior angles of pronotum rectangular. Pronotal disc regularly convex, with distinct and roundish punctures which evolve gradually to the sides into elongated tubercles. Pronotal border interrupted in the middle of anterior and basal margins. Pronotal base straight, in the middle protruding slightly beyond the level of posterior angles. Border of lateral margins entire and very narrow (breadth ratio border/base of 3rd antennomere ca. 0.29–0.33). Lateral gutters of pronotum narrow, bare, without punctures and tubercles. Anterior margin of prosternum bordered. Prosternal process subparallel, covered with roundish tubercles and numerous, long, gold-yellow setae. Border of prosternal process disappearing at apex. Pronotal hypomera covered with elongated tubercles. Hypomeral border in form of bare stripe, without punctures and tubercles.

Elytra widest in mid length. Elytron with 9 striae. Striae sulcate-lineate or punctate-lineate. Punctures on striae larger than on intervals. Intervals convex or almost flat. Surface of intervals covered by distinct and sparse punctation replaced on apex and lateral sides of elytra with fine tubercles. Elytral base bordered, humeri rectangular, not protruding outwards. Scutellum wide and flat at base. Wings absent. Elytral epipleuron flat and strongly widened at level of 5th abdominal ventrite. Abdominal ventrites distinctly transverse. Intercoxal process of 1st abdominal ventrite in males curved downwards, projecting forward beyond metaventrite margin, in females with minute convexity. Apical part of 4th abdominal ventrite in the middle in males elevated. Metaventrite and mesoventrite covered with oval tubercles and with longer, gold-yellow setae. Metaventral process simple or with denticulation.

Legs non-dimorphic.

Male and female genitalia presented typical structure of stizopoid Opatrina (Iwan & Schimrosczyk 2007).