Contarinia schlechtendaliana (Rübsaamen, 1893)
on Sonchus

Sonchus cf asper, Belgium, prov. Hainaut, Vaulx-le-Tournai © Sébastien Carbonnelle
gall
the flower heads are enlarged, because the receptacle is strongly broadened and swollen. On top of the receptacle live several yellow, jumping, larvae. Multivoltine, pupation in the soil.
According to Buhr this species makes yet another type of gall: The larvae live in the leaf axils and the adjacent section of the stem is swollen and contorted.
hostplants
Asteraceae, monophagous
Sonchus arvensis, asper, oleraceus.
synonyms
Diplosis schlechtendaliana; Contarinia sonchi Kieffer, 1896.
references
Buhr (1965a), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Gagné & Jaschhof (2014a), Houard (1909a), Redfern & Shirley (2011a), Roskam & Carbonnelle (2015a), Rübsaamen (1893a), Simova-Tošić, Skuhravá & Skuhravý (1996a), Skuhravá & Skuhravý (1994a, 1997a, 1999b), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Tomasi (2012a, 2014a).