Food Plant: Salix alba (White Willow), Salix babylonica (Weeping Willow), Salix purpurea (Purple Willow), Salix fragilis (Crack Willow). Salix triandra (Almond Leaved Willow), Salix pentandra (Bay Willow)

Egg: Lower surface of leaf

Mine: June, August -October

Pupa: Under a membrane on the margin of leaf

Notes: A tortuous lower epidermal mine with a central brownish frass-line. The larva then mines into the petiole and subsequently into a second leaf, normally opposite, where it creates another similar epidermal mine (as shown).

Data: 31.vii.2022, Downham Market, Norfolk, VC28

Image:© Rob Edmunds