Food Plant: Ulmus (Elm)

Mine: September - May

Notes:  It initially forms a gallery along the midrib, which then goes out along a vein. The end of this gallery is then excised to construct the first case. It then feeds close to this and makes several small mines. The cut-outs here are larger than described in MBGBI, but the only other species, Col. limosipennella, in MBGBI that does this on Elm has much smaller cut-outs. The case is shown above on English Elm.

Data: 02.v.2022, Frilford Heath, Oxon, VC22

Image:© WillLangdon