Author: Lieftinck, M.A.
Title: A review of old world species of Thyreus Panzer (=Crocisa Jurine) (Hym., Apoidea, Anthophoridae). Part 4. Palearctic Species.
Description: Leiden, 1968. 139 pp. 38 text-figs & 26 figs on 4 plts. Soft cover. (Zool. verhandelingen Rijksmus. Nat.hist. Leiden No. 98)

Keywords: Entomology Entomologie