Betula pubescens, cremaster; Britain, Fleet; coll. Rob Edmunds
Betula pubescens, Belgium, prov. Antwerp © Carina Van Steenwinkel: exuvium
terminal abdominal segments, ventral
The pupa differs from the one of Ph. ulmifoliella by the absence of a group of some six outwards pointing spines ventrally at abdomen 7 (Gregor & Patočka, 2001a). Cremaster with two pairs of spines, the inner pair the smallest. See also the description of larva and pupa by Bachmaier (1965a).