Plant Parasites of Europe

leafminers, galls and fungi

Stigmella microtheriella

Stigmella microtheriella (Stainton, 1854)

nut-tree pigmy

Stigmella microtheriella: mine on Corylus avellana

Corylus avellana, Amstelveen

Stigmella microtheriella mine on Carpinus betulus

Carpinus betulus, Germany (Baden-Württemberg), Badenweiler: in this hostplant the mine is much more determined by the venation of the leaf

Stigmella microtheriella: mine on Carpinus betulus

Carpinus betulus, Belgium, prov. Liège, Braives © Jean-Yves Baugnée

Corylus avellana, Nieuwendam: also in the very first part of the corridor lies the frass in a narrow central line

Stigmella microtheriella: mine on Corylus avellana

Corylus avellana, Amstelveen: very atypical mine, with over-abundant frass


Oviposition at the underside of the leaf, mostly close to a vein. The mine is a long, very slender corridor; even towards the end hardly wider than necessary to accommodate the growing larva. Frass in a narrow central line. The shape of the mine differs somewhat between the hostplants. In Carpinus the mine closely follows a heavy vein over a long distance; also the mine tends to be somewhat shorter and broader, and the frass often lies in a more diffuse line. The mines in Corylus are not so strictly defined by the venation and the frass line is narrower (Emmet, 1983a; Johansson ao, 1990a). The pale golden larva lies venter-upwards in the mine.
Sometimes it is difficult to separate the mines from those of S. floslactella; an additional difference then is in floslactella the oviposition invariably is in or very close to a vein axill, and the exit slit generally at the underside. The width of the frass line is less reliable as a character (van Nieukerken, 2021a).

host plants

Betulaceae, oligophagous

Carpinus betulus, orientalis; Corylus avellana, colurna, maxima; Ostrya carpinifolia, virginiana.


Larvae in end-June – July, and October – November (Emmet, 1983a).


BE recorded (Phegea, 2009).

NE recorded (Kuchlein & de Vos, 1999a;, 2009).

LUX recorded (Ellis: Kautenbach).

distribution within Europe

All Europe (Fauna Europaea, 2009).



The species is almost fully parthenogenetic (van Nieukerken, 2006a).


Aarvik, Bakke, Berg ao (1997a), Ahr (1966a), Anisimovas, Diškus & Stonis (2006a), Baldizzone (2004a), Beiger (1979a), Bengtsson (2008a), Borkowski (1969a), Braggion (2013a), Buhr (1935a,b, 1964a), Buszko & Baraniak (1989a), Buszko & Beshkov (2004a), J Černý (2001a), Corley, Maravalhas & Passos de Carvalho (2006a), Csóka (2003a), Deschka & Wimmer (2000a), Diškus & Stonis (2012a), Drăghia (1967a), Emmet (1983a), van Frankenhuyzen & Houtman (1972a), van Frankenhuyzen Houtman & Kabos (1982a), Gustafsson (1985a), Gustafsson & van Nieukerken (1990a), Haase (1942a), Hartig (1939a), Hering (1957a), Huber (1969a), Huemer (2012a), Huemer & Erlebach (2003a), Johansson ao (1990a), Kasy (1983a, 1987a), Klimesch (1936a, 1950c, 1958c), Kollár (2007a), Kollár & Hrubík (2009a), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), Kurz (2016a), Kvičala (1938a), Lhomme (1934b,c), Laštuvka & Laštuvka (1997a), Lepiforum (2024), Maček (1999a), Matošević, Pernek, Dubravac & Barić (2009a), Meijer, Smit, Beukeboom & Schilthuizen (2012a), Michalska (1976a), Michna (1975a), Navickaitė, Diškus & Stonis (2011a, 2014a), van Nieukerken (1986a, 2006a, 2021a), van Nieukerken, A & Z Laštuvka (2004a, 2006a), van Nieukerken, Zolotuhin & Mistchenko (2004a), Nowakowski (1954a), Popescu-Gorj & Drăghia (1966a), De Prins (1998a, 2007), Robbins (1991a), Schütze (1931a), Sefrová (2005a), Skala (1939a, 1951a), Skorb, Diškus & Stonis (0000a), Sønderup (1949a), Stammer (2016a), Starý (1930a), Steuer (1995a), Stolnicu (2008a), Szőcs (1977a, 1978a, 1981a), Tomov & Krusteva (2007a), Ureche (2010a), van Wielink (2020a), Yefremova & Kravchenko (2015a), Zoerner (1969a).

Last modified 5.i.2024