Jussila, Reijo, Sääksjärvi, Ilari E., Bordera, Santiago Revision of the western Palaearctic Mesoleptus (Hymenoptera: Ichneumonidae) JUSSILA, Reijo; SÄÄKSJÄRVI, Ilari E.; BORDERA, Santiago. “Revision of the western Palaearctic Mesoleptus (Hymenoptera: Ichneumonidae)”. Annales de la Société Entomologique de France. Vol. 46, No. 3-4 (2010). ISSN 0037-9271, pp. 499-518 URI: http://hdl.handle.net/10045/23584 DOI: ISSN: 0037-9271 Abstract: The western Palaearctic species of the genus Mesoleptus Gravenhorst 1829 are redescribed and keys are given for their identification. Also a key for the identification of the three stilpnine genera (Atractodes, Mesoleptus, and Stilpnus) is given and the biology of the genus is discussed shortly. The following species are described as new: Mesoleptus hispanicus n. sp., M. sawoniewiczi n. sp. and M. tunisiensis n. sp. The male of Mesoleptus tobiasi Jonaitis is described for the first time. New combinations is M. incessor (Haliday). New synonyms number 143 and 34 lectotypes are chosen. Keywords:Parasitoids, Taxonomy, Cryptinae, Phygadeuontini Société Entomologique de France info:eu-repo/semantics/article