437a Swammerdamia passerellaa

Single-brooded, overwinters as a pupa

Recorded larval stage July to September

Adult forewing - around 7.25 to 9.25mm. Flies late May to June

Larval foodplants : Feeds on the leaf surface under a web on Dwarf birch (Betula nana)

Not currently available on this website. For examples of a larval web and adults see:-