Plant Parasites of Europe

leafminers, galls and fungi

Chirosia betuleti

Chirosia betuleti (Ringdahl, 1935)

on fens

Chirosia betuleti: gall on Dryopteris dilatata

Dryopteris dilatata, Nunspeet

Chirosia betuleti: gall on Athyrium filix-femina

Athyrium filix-femina, Germany, Harz, Wildemann © Hans Jonkman

Chirosia betuleti: living larva

Dryopteris filix-mas, Belgium, prov. Namur, Dourbes, Tienne Delvaux © Stéphane Claerebout: living larva


Larva in the leaf tip, that is strongly contorted. An elongated white egg shell is visible at the centre of the mass. The biology is described in detail by de Meijere (1911a).

host plants

polyphagous on Pteridophyta

Athyrium distentifolium, filix-femina; Dryopteris carthusiana, cristata, dilatata, filix-mas; Pteridium aquilinum.

Recorded by Dietrich (2016a) from Thelytpteris limbosperma. In eastern Canada often on Onoclea struthiopteris (von Aderkas & Peterson (1987a).


Found by de Meijere end June-early July. I myself found a larva as early as eind May.


BE recorded (Jean-Yves Baugnée, 2009, Gesves, prov. Namur).

NE recorded (de Meijere, 1939a).

LUX recorded (Lambinon ao, 2001b).

distribution within Europe

From Scandinavia to the Iberian Peninsula and Italy, and from Ireland to Poland and Slovakia (Fauna Europaea, 2007).



Described by von Aderkas & Peterson (1987a).


Anthomyia, Chirosia, Chortophila, Craspedochaeta, signata (Brischke, 1888).


Although this species makes a gall, rather than a mine, it was included by Hering (1957a) treated in in his major work.


von Aderkas & Peterson (1987a), Béguinot (2007b), Bellmann (2012a), Beuk, Prijs & de Jong (2002a), Buhr (1964b, 1965a), Chinery (2011a), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a), Dietrich (2016a), Docters van Leeuwen (1936a), Eiseman (2018a), Groom (2011a), Hering (1957a), Houard (1908a), Kolomoec ao (1989a), Koops (2013a), Lambinon, Carbonnelle & Claerebout (2015a), Lambinon & Romain (2009a), Lambinon, Schneider & Feitz (2001b), Lehmann & Hannover (2016a), de Meijere (1911a, 1939a), O’Connor & O’Connor (1999a), Redfern & Shirley (2011a), Robbins (1991a), Roskam (2009a), Seidel (1957a), Spooner & Bowdrey (2012a), Stănescu (2009a), Tavares (1905a), Tomasi (2003a, 2014a).

Last modified 21.viii.2019