Contarinia schlechtendaliana (Rübsaamen, 1893)
on Sonchus
Sonchus oleraceus, Albasserdam-village, 19.vii.2021 © Rik Vinke
the larvae did jump
also the receptacle, and the upper part of of the peduncle is attacked
apex of the spatula
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.
host plants
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, 2021a: 268), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Tomasi (2012a, 2014a).