Figs 4‒5. 4 ‒ Participants of the 2th Czech and Slovak Hymonopterologist Seminar in České Budějovice (Czech Republic, 2007) at the social event. Jan Macek and Igor Malenovský in the foreground. Photo credit: Ladislav Roller. 5 ‒ Participants of the 5th Czech and Slovak Hymonopterologist Seminar in Labské pískovce PLA (Czech Republic) in 2013. From left: Petr Bogusch, Zdeněk Karas, Jakub Straka, Jan Macek. Photo credit: Pavel Bezděčka.