from Hering (1928b)

mine

Mine upper-surface, a corridor, widening into a blotch. The corridor starts in the leaf base, between leaf margin and midrib. It ascends along the leaf margin to the tip, descends, and about halfway or somwehwat further down it forms a blotch. Frass in the corridor in coarse strings, dispersed in the blotch. Pupation external, exit slit in the upper epidermis.

When the vacated mine dries, the blotch with adjacent leaf margin drops out, giving the remainder of the leaf a characteristic half-elliptic excision. Looking for the mines is thereby made slightly easier.

hostplants

Laminaceae, monophagous

Thymus alpestris, serpyllum.

phenology

Larvae in June.

BENELUX

Not known from the Benelux countries (Fauna Europaea, 2010).

distribution within Europe

From Lithuania to the Pyrenees, and from France to Poland (Fauna Europaea, 2010).

puparium

Brown.

references

Beiger (1960a, 1965a), Buhr (1932a, 1964a), Černý & Merz (2007a), Dreger & Myssura (2005a), Hering (1928b, 1957a), Michalska (1970a), Skala & Zavřel (1945a), Sønderup (1949a), Spencer (1976a), von Tschirnhaus (1999a).

27/01/2017