. "1993"^^ . . . "Bitsch, J. & Leclercq, J. 1993. Hym\u00E9nopt\u00E8res Sphecidae d\u2019Europe occidentale. Volume 1. Faune de France, 79 : 325 pp." . "Bitsch & Leclercq (1993)" . "1993"^^ . "Bitsch & Leclercq (1993)" .