Calathus opacus Germar, 1842

Ghannem, Samir, Pérez-González, Sergio, Pérez Zaballos, Juan M. & Boumaiza, Moncef, 2015, New records of Carabidae (Insecta: Coleoptera) from Tunisia., Arquivos Entomolóxicos 14, pp. 37-41 : 38-39

Calathus opacus Germar, 1842

Material examined. Site 1: 3 specimens, 22 May 12.

Diagnosis. Body length 8.5-11 mm. Brown insect, dark reddish appendixes. Corselet with straight posterior angle, fine stria, flat intervals, on the third stria there are four discal pores, thick antennae, and the third present additional seta scattered towards the extremity clearly visible in the male.

Habitat. Forest insect, found in a shaded area under the feet of trees ( Acacia cyanophylla Lindl, 1839 ) in the leaf litter. In Morocco, common in the mountains at medium altitudes, especially in the Middle Atlas; rarer in plain ( Antoine, 1955). In Algeria, the species is collected in the forest of Teniet-eI-Had; gardens of Chellala and Gouraya, it is considered a special, uncommon species in the Barbary ( Bedel, 1895).

Distribution: Endemic for North Africa, mainly found in Algeria and Morocco ( Bedel, 1895; Machard, 1993; L̂bl & Smetana, 2003; Ruiz-Tapiador & Zaballos, 2001). First record from Tunisia.