| UK Status 
 Resident. Widespread and generally common throughout the British Isles
as far north as Perthshire.
 
 Montgomeryshire Status
 
 Recorded from three sites in the extreme north of the county.
 
 Wingspan
:
  M & F, 13-17mm.
 
 Confusion species
 
 None.
 
 | Flight time & Voltinity
(Univoltine) 
 Habitat
 
 Woodland, parks and commons.
 
 Foodplant
 
 Birch.
 
 Lifestage data
 
 Catkin feeder. Eggs, oviposition site not documented. Larva feeds
inside a catkin. Pupates in whitish silken cocoon in larval habitation
or spun up in leaf litter on the ground.
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