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Caloptilia falconipennella
Dark Alder Stilt (Hübner, 1813)
Gracillariidae: Gracillariinae
289 / 15.011
Photo © Paul Kitchener,  Ipswich, 31 March 2017

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Similar Species
Privet Stilt
Caloptilia cuculipennella
Black-dot Stilt
Caloptilia populetorum
Wingspan: 12-14mm
Flight: All year round.
Foodplant:   Alder
Nat Status: Nationally Scarce B
Verification Grade:  Adult: 3  Mine: L
Status
Morley’s Final Catalogue: Not listed.

Recent Status: Few Suffolk records but becoming commoner in the late 2010s.

Life Style: A double brooded species that hibernates. It may also arrive in Suffolk as an immigrant. It can be found throughout the year. The larvae feed on Alnus species. They pupate in the larval habitation.

Identification: Caloptilia species stand erect on their front legs at rest. C. falconipennella is seasonally dimorphic. They are a light creamy brown with darker speckling, spots and mottling. The overall colour can also be red, orange, purple or maroon brown. The summer form has a sharply defined yellow costal blotch. This is faint or absent at other times except for the oblique front edge that defines a darker basal area. The species commonly shows dark and pale spots alternately along the dorsum and sometimes the costa. The femur and tibia of the front legs are the same colour as the wings.
The larvae initially mine a blotch on the underside of a leaf where the ovum was laid before folding a leaf edge. They will move two or three times and pupate in the last larval habitation. https://mothdissection.co.uk/species.php?Tx=Caloptilia_falconipennella

Retained Specimen / Photograph will be Required.

Mine: Either the leaf or a good photograph required

Recorded in 25 (43%) of 58 10k Squares.
First Recorded in 2005.
Last Recorded in 2024.
Additional Stats

Latest 10 Records
Date#VC10kArea
03/11/2024+26TL97Hopton/Ixworth
30/10/2024126TL85Brockley/Alpheton
25/10/2024+25TM59Lowestoft
24/10/2024126TL84Sudbury/Glemsford
24/10/2024226TL84Sudbury/Glemsford
14/10/2024126TM04Hadleigh
10/10/2024+25TM58Carlton Colville/Kessingland
16/09/2024125TM24Woodbridge/Martlesham
15/09/2024426TL84Sudbury/Glemsford
14/09/2024826TL84Sudbury/Glemsford
Further info: Caloptilia falconipennella
 
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