The solitary vespid wasps of Madagascar (Hymenoptera: Vespidae: Eumeninae, Raphiglossinae and Zethinae)

The Malagasy fauna of Eumeninae sensu lato (= Eumeninae, Raphiglossinae and Zethinae) is revised, with identification keys, photographic reference to all species and distribution maps. Thirty-three new species are described: Afrepipona dilaticlypeus sp. nov., Afrepipona ennesima sp. nov., Afrepipona imitans sp. nov., Afrepipona misinjo sp. nov., Afrepipona resoluta sp. nov., Alastor (Alastorellus) angulatus sp. nov., Alastor (Alastorellus) curvatus sp. nov., Cyrteumenes deplanatus sp. nov., Cyrteumenes laevifrons sp. nov., Cyrteumenes propodealis sp. nov., Cyrtolabulus emirufus sp. nov., Cyrtolabulus nivosus sp. nov., Cyrtolabulus oblongus sp. nov., Cyrtolabulus obscurior sp. nov., Cyrtolabulus tegularis sp. nov., Eumenidiopsis pyriformis sp. nov., Leptomenes globosus sp. nov., Leptomenes multipictus sp. nov., Leptomenes ornatus sp. nov., Leptomenes sollicitus sp. nov., Leptomenes transuo sp. nov., Leptomenes tricolor sp. nov., Malagassodynerus concolor sp. nov., Malagassodynerus monstruosus sp. nov., Malagassodynerus pulcher sp. nov., Malgachemenes aberrans sp. nov., Malgachemenes albellus sp. nov., Malgachemenes divinus sp. nov., Malgachemenes levigatus sp. nov., Malgachemenes lobatus sp. nov., Tuleara alboviridis sp. nov., Tuleara elongata sp. nov., and Tuleara pruinosa sp. nov. The following taxonomic actions are proposed: Odynerus vatondrangyensis Giordani Soika, 1941 (= Simplepipona andreanicolor Gusenleitner, 2004 syn. nov.) is transferred to Antepipona de Saussure, 1855 (= Postepipona Giordani Soika, 1974, syn. nov., = Simplepipona Gusenleitner, 2004, syn. nov.; Antepipona vatondrangyensis comb. nov.); Odynerus pensus Giordani Soika, 1937 is transferred to Knemodynerus Blthgen, 1940 (Knemodynerus pensus comb. nov.); Odynerus subventricosus Giordani Soika, 1941 is transferred to Malagassodynerus Gusenleitner, 1992 (= Giordania Gusenleitner, 1995, syn. nov.; Malagassodynerus subventricosus comb. nov.); Odynerus sakalavus de Saussure, 1890 is transferred to Tuleara Gusenleitner, 2000 (= Immutatus Gusenleitner, 2011, syn. nov.; Tuleara sakalava comb. nov.); Malgachemenes Gusenleitner, 1992, stat. resurr. is withdrawn from synonymy and reestablished as a distinct genus; Giordania nigra Gusenleitner, 1995, Odynerus hyalinelamellatus Giordani Soika, 1941, Odynerus melanus de Saussure, 1853 (= Odynerus malagassus de Saussure, 1900, syn. nov.) and Odynerus parvilamellatus Giordani Soika, 1941 are considered incertae sedis; Labus floricola de Saussure, 1890, Leptomenes laethificus Giordani Soika, 1941, Odynerus adulescens Giordani Soika, 1941, Odynerus antisrabensis Giordani Soika, 1941, Odynerus puer Giordani Soika, 1941 and Odynerus viridipictus Giordani Soika, 1941 are designated as nomina dubia. The females of Afrepipona segregata Selis & Carpenter, 2024 and Tuleara nigrita Gusenleitner, 2005 stat. nov., and the males of Antepipona declarata Giordani Soika, 1991, Cyrtolabulus flavorufus Selis, 2024, Cyrtolabulus rhombicus Gusenleitner, 2004 and Malgachemenes angustus Gusenleitner, 1992 are described for the first time. The genera Antodynerus de Saussure, 1855 and Eumenidiopsis Giordani Soika, 1939 are recorded from Madagascar for the first time. The present revision brings the total of Eumeninae s. l. known for Madagascar to 76 species.