Crossocerus walkeri
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Hymenoptera
- family: Crabronidae
- genus: Crossocerus
- species: Crossocerus walkeri
- Halbenrain
Styria- Ansfelden
- Hörsching
- Zwettl an der Rodl
Upper Austria- Vienna
Vienna
Austria- Ralingen
Rheinland-Pfalz
Germany- Bettendorf
01
Luxembourg- Svängsta
Blekinge- Mjällby
Halland- Skillingaryd
Jönköping- Röbäck
Västerbotten
Sweden