Orthomus balearicus (Piochard de la Brûlerie, 1868)

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

Orthomus balearicus (Piochard de la Brûlerie, 1868)

Figs 43–46.

Dorsum black or dark brown, males not very shiny, females entirely dull, microreticulation well developed in both sexes. Large body length, 11.0–12.3 mm. Appendages reddish brown, femora dark. Eye large and convex, tempora oblique.

Pronotum almost square in some individuals (maximum width at middle, Fig. 3), or side more curved both anteriad and apicad (maximum width on apical 2/3); the most striking features are the deep and wide lateral margin, the emarginate posterior basis and the depression of the posterior basis; both foveae deep, the inner one deeper and linear, the external one large and separate from side by a flat area; punctures of posterior basis fine and from moderate to dense, mostly found within foveae; posterior angle from obtuse to almost square, devoid of tooth or with faint traces of it.

Elytra long (L/ W 3.2), slightly dilated from basis, humeral tooth absent, discal pore 2 found on the 3rd stria or on interval between striae 2 and 3; parascutellar stria normally developed with proximal setigerous pore; intervals convex, striae smooth; the lateral margin of elytra is deep and wide, excavated, as is the lateral margin of pronotum.

Ventral segments with fine and scarce punctures; metepisterna longer than wide, L/ W 1.35. Male mesotibia regularly dilated to apex, metatibia slightly curved, dilated in apical 1/6 and with traces of crenulation.

Median lobe of aedeagus with a short triangular apical shaft (Fig. 44), more narrowed on the right side; on lateral view the penis is almost straight (Fig. 45). Female genitalia as indicated above, with a short duct and a widened spermatheca (Fig. 46).