15.005 BF283  -  Gracillariidae -  Gracillariinae - Caloptilia betulicola - Birch Stilt - (Hering, 1928) Adult Micro:  CAT 4 - Gen. Det. Required - Gen-Det-Reqd       Leaf-miner:  CAT L - The leaf or a Photo required - reared and possibly dissected       PDF Icon - click for General Verification Guidelines  |   PDF Icon - click for Specific Verification Guidelines
Green -  Rare / Uncommon / Scarce        purple - Leaf Miner
Taxonomy:   Micro  >>  Gracillariidae Other Name/s: Red Birch Slender ID Difficulty:  amber  - care required in the identification process, as confusion with similar species is likely - quality photographs required.
Confusion Species:  Caloptilia elongella (Alder Stilt) Caloptilia rufipennella (Rufous Stilt)
ID pointers: Another plain orange-brown Caloptilia and easily confused with C. elongella, with variable darker markings of orange or brown on the forewing.
Distribution:  (Last record: 05/03/2025 at Breaston )  -  Generally uncommon with only a few records – maybe under recorded and should perhaps be more reported due to amount of Birch in the recording area.
Flight Period: June /  July /  September /  October /  -  Two generations, June – July and September- October when it hibernates reappearing the following spring Mine Period: July /  September /  November /   - The larvae mine the leaves of Birch then in a folded or rolled up leaf Moth Activity: Cathemeral  Photographed: No -  Photographed By: Not Recorded
*** Last updated on 5 March 2025 by TD ***
Wingspan: 14-16mm
Food Plant: Birch
Last Recorded Date: 05/03/2025
Last Recorded By: Steve Thorpe
Last Recorded General Area: Breaston
No First Date Information Recorded

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