Michael Charles Day

• Towards the Conservation of Aculeate Hymenoptera in Europe
• Towards the conservation of aculeate hymenoptera in Europe
• A contribution to the taxonomy of the genus Anoplius Dufour (Hymenoptera: Pompilidae) including a revision of the Palaeotropical subgenus Orientanoplius Haupt
• A revision of Atopopompilus Arnold, with a note on the identity of Anoplinellus Banks (Hymenoptera Pompilidae)
• A revision of Pompilus Fabricius (Hymenoptera: Pompilidae), with further nomenclatural and biological considerations
• Nomenclatural studies on the British Pompilidae (Hymenoptera)