Difficult to distinguish from the recently separated C. robustella
please record 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 (gen. det.) Required|
|Mine: Moth needs to be reared and, in some cases, possibly dissected. |
Recorded in 19 (28%) of 69 10k Squares.
First Recorded in 1874.
Last Recorded in 2021.