A Catalogue of the [former] Yugoslavian Ichneumonidae (Hymenoptera, Insecta) Author Kolarov, J. text Linzer biologische Beiträge 2008 2008-12-19 40 2 1585 1739 journal article 10.5281/zenodo.5431642 0253-116X 5431642 Aethecerus placidus WESMAEL 1845 Aethecerus placidus WESMAEL 1845 . Nouv. Mem. Acad. Sci. Bruxels 18 : 206. Aethecerus placidus : STROBL 1900: 184 . D i s t r i b u t i o n: Europe and Siberia.