Coleophora biforis and C. otidipennella feed exclusively on Luzula. C. antennariella is limited to Luzula pilosa .
C. sylvaticella feeds only on L. sylvatica .
Coleophora biforis and C. otidipennella feed exclusively on Luzula. C. antennariella is limited to Luzula pilosa , and C. sylvaticella feeds only on L. sylvatica .