Dasineura tortilis (Bremi, 1847)
on Alnus
Alnus incana, Norway, Breivika, Breivikdalen, 22.vii.2020 © Hallvard Elven: gall
Alnus incana, Norway, Breivika, Breivikdalen, 22.vii.2020 © Hallvard Elven: gall
Alnus incana, Norway, Breivika, Breivikdalen, 22.vii.2020 © Hallvard Elven: gall
Alnus incana, Norway, Ellingsrud, 19.vi.2022 © Hallvard Elven: gall
Alnus incana, Norway, Breivika, Breivikdalen, 22.vii.2020 © Hallvard Elven: larva
Alnus incana, Norway, Breivika, Breivikdalen, 22.vii.2020 © Hallvard Elven: larva
Alnus incana, Norway, Ellingsrud, 19.vi.2022 © Hallvard Elven: larva
Alnus glutinosa, Belgium, prov. Antwerp, Scheps, Balen, 7.vi.2015 © Carina Van Steenwinkel
larvae
Alnus glutinosa, Dronten © Arnold Grosscurt
opened gall with full-grown larva
Alnus glutinosa, Zeewolde, Harderbos © Hans Jonkman: identification cf, gall vacated
another view
gall
larvae in the folds of a crumpled leaf. Larva initially yellow, later orange red, gregarious. Because the external digestion of the leaf tissue continues after the larvae have left, the galled part of the leaf turns brown and dies. One generation per year. Hibernation in the soil.
host plants
Betulaceae, monophagous
Alnus glutinosa, incana, x pubescens (= glutinosa x incana), viridis.
synonyms
Dasineura, Perrisia, alni (Löw, 1877).
notes
Mainly on suckers.
The colour of the larvae is important. If they are yellow, with anterior and posterior end red, Jaapiella clethrophila is involved.
inquilines
Several authors believe that that clethrophila could be in inquiline of tortilis, rather than being an autonomous gall causer. And a third species, Macrolabis alnicola, is cited by him as an inquiline of either of these two.
parasitoids, predators
references
Abras, Fassotte, Chandelier & Cavelier (2008a), Barnes (1948b, 1951a), Béguinot (2006a,b,h, 2007b, 2012a), Bruun (2015a), Buhr (1964b), Burton, Ellis & Schneider (2022a), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Hansson & Shevtsova (2012a) , Houard (1908a), Ilie & Marinescu (2011a), Kieffer (1901b), Koops (2013a), Lambinon, Carbonnelle & Claerebout (2015a), Lambinon & Romain (2009a), Lehmann & Hannover (2016a), Redfern & Shirley (2011a), Roskam (2009a), Roskam & Carbonnelle (2015a), Simova-Tošić & Skuhravá (2001a), Simova-Tošić, Skuhravá & Skuhravý (1996a, 2000a, 2004a), Simova-Tošić, Skuhravá, Skuhravý & Postolovski (2007a), Skrzypczyńska (2007a), Skuhravá (1989a, 2006a), Skuhravá & Skuhravý (1988a, 1992b, 1994a, 1997a, 1999a,b, 2003a, 2005b,c, 2006a, 2007a, 2009a, 2010a,b, 2012a, 2021a: 30), Skuhravá, Skuhravý & Carbonnelle (2017a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Hellrigl (2001a, 2002a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Stănescu (2009a).