Metzneria aestivella (Zeller, 1839)
According to Buhr the larvae would live in the strongly sclerified receptacle, what could result in some malformation of the flower head. Bland ao write that the larva feeds on the achenes.
Metzneria carlinella Stainton, 1851.
Bland, Emmet, Heckford & Rutten (2002a), Buhr (1964a), Kasy (1987a), Patocka (1997a), Redfern & Shirley (2011a).