Isocolus centaureae Dyakonchuk, 1982
The galls lie between the unmodified involucral bracts and eventually fall off. They are unilocular, 2 mm long, elliptic; the wall is thin, lignified and slightly rough.
Centaurea diffusa, pseudomaculosa, solstitialis, virgata subsp. squarrosa.
Melika (2006a), Melika & Karimpour (2012a).