Gender of the genus Dioxys Lepeletier & Serville, 1825

The genus Dioxys Lepeletier & Serville, 1825 is masculine, just like the other Megachilidae genera with the “- oxys ” suffix, namely Coelioxys Latreille, 1809, Metadioxys Popov, 1947 and Paradioxys Mocsáry, 1894 . In the 2023 checklist however, the European Dioxys species were listed as feminine. Except for Dioxys ardens Gerstäcker, 1869 and Dioxys lanzarotensis Tkalců, 2001 for which there is no gender change, the other European Dioxys should be listed as: Dioxys atlanticus Saunders, 1904; Dioxys cinctus (Jurine, 1807); Dioxys moestus Costa, 1883, and Dioxys pumilus Gerstäcker, 1869 .