Dioxys Lepeletier & Serville

Dioxys Lepeletier & Serville, 1825: 109, type species: Trachusa cincta Jurine, 1807, monobasic.

Hoplopasites Ashmead, 1898: 284, type species: Phileremus productus Cresson, 1879, by original designation.

Chrysopheon Titus, 1901: 256, type species: Chrysopheon aurifuscus Titus, 1901, monobasic.

Notes.

Dioxys is a Holarctic genus distributed in most of Europe and North Africa to central Asia in the east and the southwestern USA and adjacent Mexico in the western hemisphere (Hurd 1958; Michener 2007). Five species occur in North America, and approximately 13 occur in the Palaearctic region (Warncke 1977; Ghisbain et al. 2023). Six species occur in Europe.