A review of the Malthinus flaveolus (Herbst, 1786) group of species (Coleoptera: Cantharidae) of the European part of Russia and the Caucasus

The list of soldier beetles of the genus Malthinus Latreille, 1805 of the Caucasus is complemented with Malthinus pseudoflaveolus Wittmer, 1974 from the M. flaveolus (Herbst, 1786) species group. Although M. pseudoflaveolus had been reported from the region, it was later excluded from the Caucasian fauna. This time it is registered in Georgia, and this increases the total number of Malthinus species known from the Caucasus to 15. The habitus of M. pseudoflaveolus, as well as the aedeagi and male ultimate abdominal segments of M. flaveolus, M. pseudoflaveolus and M. flaveoloides Švihla, 1997 are illustrated.