Rhopalomyia chrysanthemi (Ahlberg, 1939)
Small oval or conical galls of about 2 mm that are obliquely inserted on the leaf, stem, of involucre, often several together. Each contains a white or reddish orange larva. Heavily infested plants are stunted and malformed. In greenhouses a number of overlapping generations; pupation within the galls.
Chrysanthemum indicum, rubellum.
Originally a North American species. Occurs mainly on greenhouse chrysanthemums (an then a potential pest), but also in the open.
Barnes (1948a), Buhr (1964b), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Redfern & Shirley (2011a), Roskam & Carbonnelle (2015a), Skuhravá & Skuhravý (1997a, 2012a, 2021a: 79), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a).