Kessleria fasciapennella is a moth of the family Yponomeutidae. It is found in Great Britain, Fennoscandia, the Baltic region, Poland, Austria, Switzerland and Spain.[1]
The wingspan is 14–18 mm. Adults are on wing from August to September and again, after overwintering, from May to June.[2]
The larvae feed on Parnassia palustris. They mine the leaves of their host plant.[3] They can be found from June to July.