Diomus rubidus ( Motshulsky, 1837 )

Canepari, Claudio, 2009, New data on some Coccinellidae (Coleoptera) from the Mediterranean Region, Zootaxa 2318, pp. 394-399 : 395

Diomus rubidus ( Motshulsky, 1837)

Material examined. Italy: Sardinia: Carbonia-Iglesias prov., Domusnovas, sa Duchessa , 371 m, UTM 32S 0464990 4358384, 4-18.IV.2006, G. Chessa leg., Malaise trap, 2 ex ( CNBFVR); Carbonia-Iglesias prov. , Iglesias, dint. Colonia Beneck, 636 m, UTM 32S 0462391 4355441, 11-25.VII.2008, G. Chessa leg., Malaise trap, 6 ex ( CNBFVR, CCC) .

Remarks. Species widespread from Central Asia to the Mediterranean Region ( Kovář 2007), but previously unrecorded from Sardinia ( Canepari 2004).

The genus Diomus Mulsant, 1850 once considered a subgenus of Nephus Mulsant, 1846 is characterized by postcoxal lines united with the posterior margin of the first abdominal sternum. Subsequently Gordon (1999) raised Diomus to genus level and created the tribe Diomini based on the shape of the basal capsule of the sipho and the morphology of the basal lobe. In Diomus rubidus the basal capsule of the sipho is identical to many species of Scymniscus Dobzhansky 1928 (cf. Canepari 2000) with short sipho and basal capsule not T-shaped.