| UK Status 
 Resident. Widespread throughout Britain as far north
as the central lowlands of Scotland.
 
 Montgomeryshire Status
 
 Found from several sites across the county, probably under-recorded.
 
 Wingspan
:
  M & F, 20-23mm.
 
 Confusion species
 
 Y. padella.
 
 | Flight time & Voltinity
(Univoltine) 
 Habitat
 
 Mainly orchards.
 
 Foodplant
 
 Apple.
 
 Lifestage data
 
 Leaf miner/web forming. Eggs laid in batches under a protective
covering on the foodplant. Larva first mines the leaves, then feed
gregariously in a web. Pupates gregariously in the web.
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