Terellia serratulae is a species of tephritid or fruit flies in the family Tephritidae.

This bluish clear-winged fruit fly has a hairy abdomen with a chequered black pattern.

The young larvae start feeding on the achenes of thistles (mainly Cirsium and Carduus species), but they do not induce gall-forming.

They develop in the flower-heads (capitulum) of thistles in a cocoon of silk and plant hairs (pappus).

[8] This species can be found around thistles in most of Europe, in the eastern Palearctic realm, in the Near East, and in North Africa.