Perizoma incultaria (Herrich-Schäffer, 1848)
Full depth mine; a long, slender, corridor at first. This widens into a blotch that may occupy the largest part of the leaf and then obliterates the corridor. The larvae is able to make a number of mines. Frass in the corridor in an initially broad, later narrow central line; in the blotch it lies dispersed in coarse blackish green lumps.
Primula auricula, “viscosa”.
Larvae of the first, mining, generation in July. The larvae of the second generation do not mine, but live in the fruit capsules (Hering, 1957a).
Not known from the Benelux countries.
distribution within Europe
From Germany and Poland to Spain, and from France to Italy and the Balkan Peninsula (Fauna Europaea, 2011); alpine species (Hering, 1957a).
When the larvae is taken out of its mine it makes the characteristic geometer movements that constitute its family character (Hering, 1957a).
Cidaria, Larentia incultaria.
Beiger (1979b), Hering (1931f, 1957a, 1964a), Skala (1948a).