STUDIES ON SOME CYCLORRHAPHOUS FLIES IN ASSIUT GOVERNORATE

Abstract

1- Survey on Cyclorrhaphous Flies:

In trial to throw some light on the cyclorrhaphous flies in Assiut territory, monthly collection of these flies and identification of their different species were done from Dect:_mber 2000 to November 200 I. The survey revealed the presence of eighteen different species which belongs to six different genera. Family Muscidae includes Musca domestica, M. albina, M. sorbens, Fannia canicularis, F. scalaris, F. leucostica, Muscina stabulans and Stomoxys calcitrans. Family Muscidae was the most prevalent family in all seasons with M. domestica the most prevalent species. Family Sarcophagidae includes Sarcophaga haemorrhoidalis, S. camaria and Ravinia striata with S. haemorrhoidalis was the prevalent species. Family Calliphoridae includes Calliphora vicina, Chrysomya albiceps and Lucilia sp. with Chrysomyia albiceps was the prevalent species and family Phoridae with Megaselia species was the only prevalent species.

The most prevalent species of the collected flies in order were Musca domestica, Sarcophaga haemorrhoidalis, Megaselia sp., Fannia leucostica, S. camaria, ChiJ'Somya albiceps, Ravinia striata and M. albina.

Seasonal fluctuation and density were determined, the highest density of flies was recorded during Autumn followed by Spring and Summer and the le;1st density was during Winter season. The Autumn months considered the most favourable period for breeding and activity of flies and Winter was the off season for the fly breeding and activity.