Last modified: May 3, 2024, 8:02 p.m.
A very rare species in Belgium, only discovered in 2016 and occurring only in NA.
Native
The caterpillar is greenish white with a lighter brownish head.
The caterpillar makes a light ochreous brown silken slender case, about 9 mm in length, and a mouth angle of 20°.
See also bladmineerders.be.
The caterpillar forms little fleck mines on the host plant.
The eggs are deposited on the underside of the leaves.
Caterpillars are appearing in the autumn making a little case and feeding at the lower parts of the hostplant. The caterpillars are overwintering half-grown and start to feed again in springtime.
The larvae are full-fed in June.
The adults are on the wing from the end of June till the beginning of August.
Aster linosyris is the most taken hostplant till now. Rarely also on Aster ssp. Bellis perrenis or Solidago virgaurea.
In Belgium, it occurs in limestone areas where the food plant grows.