1. Basden, E.B.: Diapause in Drosophila (Diptera: Drosophilidae). Proc. roy. ent. soc. Lond. 29, 114–118 (1954)
2. Begon, M.: The feeding-and breeding-sites of Drosophila obscura Fallén and D. subobscura Collin. Oikos, (submitted for publication, 1975)
3. Carson, H.L.: The ecology of Drosophila breeding-sites. In: H.L. Lyon, Arboretum Lecture, No. 2, pp. 1–27. Honolulu: University of Hawaii 1971
4. Carson, H.L., Stalker, H.D.: Reproductive diapause in Drosophila robusta. Proc. nat. Acad. Sci. (Wash.) 34, 124–129 (1948)
5. Dobzhansky, Th., Epling, C.: Contributions to the genetics, taxonomy and ecology of Drosophila pseudoobscura and its relatives. Carnegie Inst. Wash. Publ. 554, 1–46 (1944)