Entomologica Scandinavica Supplement 23
now changed to Insect Systematics and Evolution Supplement
ESS 23.
LÖKEN, A.: Scandinavian species of the genus Psithyrus Lepeletier (Hymenoptera: Apidae). 1984. 45 pp. SEK 40.
Abstract:
Keys, synonymy, bibliographies, decriptions, distributions and host relationships are given for the 9 Scandinavian species of Psithyrus. All European species are included in the keys.