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.
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).
Trachys coruscus (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 (2002a), Brakman (1966a), Brechtel & Kostenbader (2002a), Buhr (1933a), Cobos (1986a), Hering (1936b, 1957a), Niehuis (2004a), Schaefer (1949a), Théry (1942a), Ugarte San Vicente (2005a), Ugarte san Vicente, Zabalegui & Salgueira Cerezo (2006a), Verdugo Paez (1997a, 2003a).