Status
Difficult to distinguish from the recently separated C. robustella Determination by Genitalia Examination (gen. det.) Required.
please record all undetermined specimens as the aggregate Caloptilia alchimiella/robustella
Leaf-mine: July - Oct.
Narrow gallery leading to a squarish or triangular blotch. Then forms up to three successive cones by folding the lobe of a leaf downwards.
Note: You cannot separate these from C. robustella unless you examine the pupa or breed out.  | Determination by Genitalia Examination Required | |
| Mine: Moth needs to be reared and, in some cases, possibly dissected. | |
Recorded in 22 (30%) of 74 10k Squares.
First Recorded in 1874.
Last Recorded in 2023. |