Semudobia betulae (Winnertz, 1853)
on Betula
Betula pendula, Loenen (Ge), 10.vi.2020 © Arnold Grosscurt: normal gall, double gall, and two ungalled nutlets
opened double gall
Betula pendula, Amstelveen, Schinkelbos, 18.ix.2007; occupies gall; often the wings of the fruitlet are more severely malformed then the case is here
Betula pendula, Amsterdamse Waterleidingduinen, 20.viii.2008; vacated gall
Betula pendula, Vreeland, Lambertskade, 11.viii.2012: larva
Betula pendula, Diemen, 17.x.2006; parasitised gall
gall
Characteristically, the wings of the fruitles are still present, but irregular and disfigured. The gall has large and conspicuous window (preformed exit opening). The gall contains a single, orange, larva. The larva hibernates in the gall and pupates in spring.
host plants
Betulaceae, monophagous
Betula nana, pendula, pubescens, pubescens var. glabrata.
Preference for B.pendula (Roskam & van Uffelen)
larva
prosternum with spatula (from Möhn, 1955a)
inquilines
synonyms
Oligotrophus betulae.
references
Bachmaier (1965a), Barnes (1951a), Béguinot (2006b, 2012a), Bellmann (2007b, 2012a), Bruun (2015a), Buhr (1964b), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Houard (1908a), Koops (2013a), Lambinon, Carbonnelle & Claerebout (2015a), Lambinon, Schneider & Feitz (2001b), Möhn (1955a), Redfern & Shirley (2011a), Roques, Cleary, Matsiakh & Eschem (2017a), Roskam (1977a, 1979a, 2009a), Roskam & Carbonnelle (2015a), Roskam & van Uffelen (1981a), Simova-Tošić, Skuhravá Skuhravý (1996a, 2000a, 2004a, 2007a), Simova-Tošić, Skuhravá, Skuhravý & Postolovski (2007a), Skrzypczyńska (2007a), Skuhravá & Skuhravý (1988a, 1997a,b, 1999a,b, 2005b,c, 2006a, 2007a, 2009a, 2010a,b, 2012a, 2021a: 52), Skuhravá, Skuhravý & Buhr (2013a), Skuhravá, Skuhravý & Carbonnelle (2017a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Hellrigl (2001a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Tomasi (2014a).