Drosophila subobscura in Egypt and its probable derivation

In April 1978 a total of 26565 drosophilid flies were collected in Egypt. Of ten species five are new records for Egypt, while two previously reported Drosophila species were not found. Seven of the species belong to the genus Drosophila and are known to be partly, or wholly, domestic.For the first time Drosophila subobscura is reported from Egypt. The species was collected at low frequency in an orchard near Alexandria, and one specimen was trapped in a city park in Cairo. Judged from the gene arrangements of 41 males studied, Egyptian Drosophila subobscura seem likely to be derived from recent immigrants from the south coast of Asia Minor.