Last modified: June 17, 2024, 12:13 p.m.
A new species for Belgium in 1985 (BR), Nowadays still a very rare species in the northern part of Belgium.
Native
Wingspan 12–14,5 mm.
The forewings are light grey till light brown with lighter stripes.
The antennae are ringed alternating white and grey.
The trivalved case is brown and made of silk, about 6 to 8 mm long, and with a mouth angle of 10°.
See also bladmineerders.be.
The eggs are oviposited on the flowers. Generally, this species lives in the inflorescence, feeding on the flowers; very rarely however it behaves as a leafminer feeding on the leaves of the plant. Larvae from August till November.
Cases can be found on the flowers till well in November, they hibernate on the plant itself or in the neighborhood at ground level.
The adults fly from the end of May till the beginning of July.
Tanacetum vulgare.