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Caloptilia elongella
Alder Stilt (Linnaeus, 1761)
Gracillariidae: Gracillariinae
282 / 15.004
Photo © Graham Moates,  SWT Lackford Lakes 04/07/2018

Similar Suffolk Species
Birch Stilt
Caloptilia betulicola
Maple Stilt
Caloptilia semifascia
Wingspan: 14-16mm
Flight: All year round.
Foodplant:   Alder
Nat Status: Common
Verification Grade:  Adult: 3  Mine: A

Morley’s Final Catalogue: Not very commonly beaten from bushes in Bentley Woods during August, November, March and April 1895-1934 (Mly); Flixton near Bungay in April 1891 (Ctw); Reydon in September 1935 (Baker); Sutton and Thetford (Whit.); Blythbro (Gd).

Recent Status: Commonly recorded in Suffolk

Life Style: A double possibly triple brooded species that hibernates. It comes to light and can be found throughout the year. The larvae feed on Alnus species. They pupate under a membrane on the underside of a leaf.

Identification: Caloptilia stand erect on their front legs at rest. This species is one of the less well marked Caloptilia species. It has a variable colour from dull brown to bright yellow ochre. It has variable darker spots and patches. It often has a paler streak centrally from the base and along the costa. There may sometimes be a pale or yellowish indistinct patch on the costa. The femur and tibia are similarly coloured to the wing. It may sometimes be similar to forms of C. betulicola then dissection is then necessary for identification. More Info
The larvae feed from a small gallery on the upperside of a leaf where the ovum was laid. This becomes a blotch. They then leave this to roll a leaf longitudinally. A second roll is produced.

Retained Specimen / Photograph will be Required.

Recorded in 35 (60%) of 58 10k Squares.
First Recorded in 1891.
Last Recorded in 2024.

Latest 5 Records
Date#VC10k Area
16/02/2024125TM25 - Wickham Market/Otley
14/02/2024125TM25 - Wickham Market/Otley
18/11/2023125TM25 - Wickham Market/Otley
30/10/2023+25TM34 - Hollesley/Rendlesham Forest
23/10/2023125TM25 - Wickham Market/Otley
Further info: Caloptilia elongella
 
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