Kessleria petrobiella explained

Kessleria petrobiella is a moth of the family Yponomeutidae. It is found in Austria, Slovenia and Italy.^[1]

The length of the forewings is 6.3–8 mm for males and 6.4–7.8 mm for females. Adults are on wing from the end of May to the beginning of August.^[2]

The larvae feed on Saxifraga caesia.

Notes and References

1. http://www.faunaeur.org/full_results.php?id=433921 Fauna Europaea
2. https://archive.org/details/mitteilungenderm811991mn Huemer, P. & G. Tarmann (1991): Westpaläarktische Gespinstmotten der Gattung Kessleria Nowicki: Taxonomie, Ökologie, Verbreitung. — Mitteilungen der Münchner Entomologischen Gesellschaft 81: 5–110