Norfolk status Very similar to C. alchimiella, shorter and less clearly defined yellow blotch on the forewing. Only reliably separated by dissection.
Please record as the aggregate Caloptilia alchimiella/robustella if undetermined.
Leaf-mine: May - July, September - October. Short gallery becoming a blotch. Later in up to three cones at the edge of the leaf. Note: You cannot separate these from C.alchimiella unless you examine the pupa or breed out.
Determination by Genitalia Examination (gen. det.) Required
Mine: Moth needs to be reared and, in some cases, possibly dissected.
Recorded in 24 (35%) of 69 10k Squares. First Recorded in 1989. Last Recorded in 2020. Additional Stats