Faune de l'URSS. Insectes Dipteres. Vol. 9 no. 2. Fam. Bombyliidae (sous-fam. Bombyliinae). [In Russian with German descriptions.] Inst zool Acad Sci URSS Leningrad (NS), no. 25 1940: ix & 414 pp.. [Zoological Record Volume 78]