Orthomus planidorsis (Fairmaire, 1872)

Serrano, J., 2021, The genus Orthomus Chaudoir, 1838 in the Iberian Peninsula and Morocco, Russian Entomological Journal 30 (4), pp. 430-447 : 439

Orthomus planidorsis (Fairmaire, 1872)

Figs 47–50.

Dorsum brown, with blackish to reddish hue, shiny in both sexes as microreticulation is not much developed in females; appendages piceous red. Eye of large size, convex, tempora oblique. Body length 9.0–11.2 mm.

Pronotum transverse with maximum width at middle (Fig. 47); from here clearly narrowed forward and almost straight backward; posterior angle slightly obtuse and not toothed; anterior angle not protruding, posterior basis not emarginate; however, lateral margin and side are clearly widened in posterior third; external fovea rugose and punctured, vaguely limited, internal one deep and linear; punctures of posterior moderately dense.

Elytra long, parallel, basis forming at humerus a small fold tooth-like. Intervals almost flat, striae deep, smooth or with traces of punctures; second disk pore adjoining stria 2. Prosternal process rounded with acute ridge directed toward mesosternum; ventral segments with few punctures; metepisterna longer than wide, L/ W 1.3. Male mesotibia regularly dilated to apex, metatibia slightly curved, dilated in apical 1/6 and without crenulation.

Median lobe of aedeagus with short triangular apical shaft, deviated to right (Fig. 48); penis in lateral view somewhat ventrally curved and elevated at tip (Fig. 49). Female genitalia (Fig. 50) as described above.