Some structural observations between two species, Przhevalskiana silenus (Brauer, 1858), Cochliomyia hominivorax (Coquerel, 1858), infected goats in Saudi Arabia

The Study presented ultrastructure of two genus of fly larvae Przhevalskiana silenus (Brauer, 1858) and Cochliomyia hominivorax (Coquerel, 1858) causes the myasis in farm animals in the Kingdom of Saudi Arabia, the study recorded the structure of these two types showed differences Spines distribution and morphological characteristics of Mouth-hooks and Spiracles that would not recognize with a light microscope. The study presented that the highest rate of infection myasis in the summer months at different ages in male and female .