Trachys quercicola Marseul, 1871

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

mine, upper side

frass pattern

larva in is mine; ventral view
mine
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.
phenology
Larvae in June-July (Hering, 1957a).
distribution within Europe
France, Iberian Peninsula, Italy (Fauna Europaea, 2007).
larva
Schaefer (1949a).
notes
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.
references
Bilý (2002a), Cobos (1986a), Hering (1957a), Schaefer (1949a), Théry (1942a).