Last modified: Sept. 6, 2023, 5:38 p.m.
Discovered new for Belgium in 2009 in some southern limestone areas, where it is local and very rare.
Native
Underside mine, whitish to light green at the underside, dark green to purplish above. Because the foodplant has small leaves, the fully developed mine occupies the entire leaf surface and the caterpillar has to move sometimes to other leaves.
See also gracillariidae.net and bladmineerders.be.
Pupation mostly in the last mine, but sometimes the caterpillar spins some leaves together. The pupa hibernates.
The adults fly in two generations a year: mainly during May and June and again in August.
In Belgium the species has thus far only been found on Teucrium chamaedrys but it can also live on other Teucrium species.
Bound to warm limestone areas where the foodplants grow.