Larval cells green, not lined with a white fungus...Contarinia partheniicola (Cockerell)
Galls are 5β8 mm long, 4β5 mm wide and are found on axillary buds, along stems, on young leaves, on flowers, and along the rachis of the inflorescence. Adults have been reared in spring and fall. Hosts: A. chamissonis, A. confertiflora, A. dumosa, A. eriocentra, A. psilostachya, and Parthenium...
β- Raymond J. Gagne: (1989) The plant-feeding gall midges of North AmericaΒ©