| UK Status 
 Resident. Widespread and common throughout the
British Isles.
 
 Montgomeryshire Status
 
 Recorded from a few sites in the north of the county. Probably more
common than the
records suggest.
 
 Wingspan
:
  M & F, 19-22mm.
 
 Confusion species
 
 Y. cagnagella and Y. malinellus.
 
 | Flight time & Voltinity
(Univoltine) 
 Habitat
 
 Wherever the foodplant is found.
 
 Foodplant
 
 Blackthorn, hawthorn, plum, cherry.
 
 Lifestage data
 
 Web forming. Eggs laid in batches under a protective covering on
foodplant. Larva feed on buds/leaves in a web gregariously. In some
cases they can defoliate a complete tree. Pupates gregariously in web.
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