Last modified: Feb. 22, 2026, 12:06 p.m.
First observed in Belgium in 2009, imported by plant nurseries. Hitherto still a very rare and local species in Belgium.
Invasive
The caterpillar makes mines in the needles or leaves of the food plant during the winter; later on, it leaves the mine to pupate in a cocoon attached to the plant or on the ground. The adults come to light.
The adults have been seen from late April till mid-June.
The species feeds on a number of conifers from the cypress family, like Juniperus sp. and Thuya occidentalis.