Last modified: July 27, 2019, 2:58 p.m.
A very rare species, only found in the beginning of the 20th century in the province of Namur. Rediscovered again in 2019.
An empty seed-head is used as a case by the caterpillar. While growing, it can build several seed-heads together, with a maximum of five (cfr. Coleophora trifolii (Curtis, 1832) on Melilotus sp.).
See also bladmineerders.be.
The female is viviparous, no eggs are oviposited! The larvae live on Silene flowers, especially inside the seeds. The fully grown larva leaves the seed case looking for a tree to bore into the bark. It overwinters and even pupates there in May.
In May, probably also in June.
Lychnis flos-cuculi is the main food plant, but cases have also been recorded on other Lychnis spp. and also Silene spp. are accepted.
This species has a preference for plants living in open places inside woods.