Plant Parasites of Europe

leafminers, galls and fungi

Trachys quercicola

Trachys quercicola Marseul, 1871

Trachys quercicola: mines on Stachys recta

Stachys recta, France, dépt. Ardèche, Soyons, lieu-dit “Tour penchée” © Stéphane Claerebout

Trachys quercicola: mine on Stachys recta

mine, upper side

Trachys quercicola: frass pattern

frass pattern

Trachys quercicola: larva in its mine

larva in is mine; ventral view


Full depth, transparant blotch. Oviposition site covered by a shining black drop of hardened secretion. Frass in granules or thread fragments. Pupation in the mine, pupa not in a cocoon.

host plants

Lamiaceae, oligophagous

Salvia pratensis; Stachys annua, recta.

Stachys recta is the most mentioned host plant.


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

distribution within Europe

France, Iberian Peninsula, Italy (Fauna Europaea, 2007).


Schaefer (1949a).


Also on Stachys mines Trachys problematicus, and Hering (1957a) suggests that the two might have a subspecific relationship. The distribution patterns certainly supports Hering’s idea, but the Fauna Europaea (2007) treats them as two independent species.


Bilý (2002a), Cobos (1986a), Hering (1957a), Panin, Săvulecu & Ruicănescu (2015a), Sakalian (2003a), Schaefer (1949a), Théry (1942a), Verdugo (2005a), Verdugo Páez (2002a).

Last modified 9.iv.2021