Food Plant: Betula (Birch)

Egg: Underside of leaf

Mine: July, September - early November

Notes: The mine is long (usually 3 - 4 cm) and contorted with the mine edges more or less parallel (compare with S.luteella where the edges are scalloped); The larva is yellow, gut-line green, with a small brown spot on the prothorax.  There are often several mines in a leaf. The mines are found frequently on seedlings and small plants. The cocoon is shown.

Data: 22.x.2015, ex mine 20.x.2015, Hull, South-east Yorkshire, VC61

Image:© Barry Warrington