Plant Parasites of Europe

leafminers, galls and fungi

Trachys troglodytiformis

Trachys troglodytiformis Obenberger, 1918


Full depth, inconspicuous, primary blotch without a preceding corridor. Oviposition site, either upper- or lower-surface, covered by a shining black drop of hardened secretion. Frass in thread fragments. Pupa in the mine, not in a cocoon.

host plants

Malvaceae, oligophagous

Alcea rosea; Althaea cannabina, hirsuta, officinalis; Hibiscus palustris; Malva alcea, neglecta, olbia, pusilla, sylvestris.


Larvae in May-June (Hering, 1957a).


BE observed (Niehuis, 2004a), but this is not reflected in the Fauna Europaea (2007).

NE unclear: recorded as Dutch by the Fauna Europaea (2007), but this is not confirmed in Brakman (1966a) or Niehuis (2004a).

LUX not recorded (Fauna Europaea, 2007).

distribution within Europe

Europe, south of the line Germany – Ukraine; not in the British Isles (Fauna Europaea, 2007).


see Bilý (1999a).


Trachys coruscus, corusca (Ponza, 1805), T. fabricii Schaefer, 1949; T. pygmaeus (Fabricius,1787).


In Germany only in extremely xerothermic situations (Brechtel & Kostenbader, 2002a).


Amsel & Hering (1930a, 1933a), Beiger (1979a), Bilý (1999a, 2002a), Brakman (1966a), Brechtel & Kostenbader (2002a), Buhr (1933a), Cobos (1986a), Hering (1936b, 1957a), Mifsud & Bilý (2002a), Mifsud, Cassar & Bílý (2020a), Murria Beltrán & Murria Beltrán (2005a), Niehuis (2004a), Panin, Săvulecu & Ruicănescu (2015a), Sakalian (2003a), Schaefer (1949a), Théry (1942a), Ugarte San Vicente (2005a), Ugarte san Vicente, Zabalegui & Salgueira Cerezo (2006a), Verdugo (2005a), Verdugo Paez (1997a, 2002a, 2003a).

Last modified 23.iii.2023