Trachys troglodytiformis Obenberger, 1918

mine

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.

phenology

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

BENELUX

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).

larva

see Bilý (1999a).

synonyms

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

notes

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

references

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).