Complementary revisionary information is provided for the click-beetle genus Dima Charpentier, 1825 in the Balkan Peninsula. Five species are described as new for science: Dima bialookii sp. nov. (Greece), D. blazeji sp. nov. (Albania), D. gazureki sp. nov. (Albania), D. timfristosensis sp. nov. (Greece), and D. tomorrensis sp. nov. (Albania). The male of D. hirtipennis Platia, 2011 is described for the first time. Dima etoliensis Platia, 2012 syn. nov. is a subjective junior synonym of D. evritaniensis Schimmel Platia, 2008. New specimens and distributional data are reported for D. assingi Schimmel Platia, 2008, D. dalmatina Küster, 1844, D. elateroides Charpentier, 1825, D. evritaniensis, D. florinensis Platia, 2012, D. hirtipennis, D. hladilorum Schimmel, 1987, D. lebenbaueri Schimmel Platia, 2008, D. macedonica Schimmel, 1993, D. marvani Mertlik Dusanek, 2006, D. neumanni Platia, 2013, D. olympica Meschnigg, 1934, D. parnonensis Schimmel Platia, 2008, D. pecoudi Fleutiaux, 1944, D. pelikani Mertlik, Németh Kundrata, 2017, D. pelionensis Mertlik, Németh Kundrata, 2017, D. vailatii Schimmel Platia, 2008, and Dima sp. cf. orientalis Mertlik, Németh Kundrata, 2017. Morphological variability in D. hladilorum is discussed. Figures of habitus and main diagnostic features are provided for all new species, D. evritaniensis from Nerosirtis surroundings in Panetolikó Mts. (i.e., type locality of D. etoliensis syn. nov.), and for the male of D. hirtipennis. Additionally, we update the distribution maps for the genus Dima in the Balkans based on the new findings. Currently, 37 described species of Dima are known from the Balkan Peninsula. We discuss the morphological diagnostic characters for Dima species and call for the molecular phylogenetic study for this group.

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