摘要:The phenotypic variation of Thaumatomyia notate (Meigen, 1830) (Chloropidae) collected from six different regions was studied in the East Azerbaijan province in northwestern Iran during 2009-2012.Eight populations of Thaumatomyia notata with different phenotypes were recognized.Environmental parameters such as temperature, elevation and habitat were examined.The results of this study show that colour variation in T. notata is caused mostly by seasonal temperature, dark coloration in April to light in July.In addition, variation in some morphological characters such as antenna, ocellar triangle, microchaetotaxy and size as well as diagnostic characters and photos of each variation are provided.