Yponomeutidae : Yponomeutinae
  Prev | Next  
Photo © Allan Eaton,  30/6/20 Kessingland

Similar Suffolk Species
Swammerdamia pyrella
Little Ermine
Paraswammerdamia albicapitella
White-headed Ermine
Upload a Photo
Swammerdamia caesiella
Birch Ermine

(Hübner, 1796)437 / 16.015

Morley’s Final Catalogue: By no means common, on birch. Bentley Woods in late April 1895 (Mlv); Ipswich 1931 (Whit); Orford in July 1902 (Gibbs); Aldeburgh in 1892 (Ctw); Leiston (Grey), Blythbro Wood.

Recent Status: Recorded commonly in the Sandlings.

Life Style: A double brooded species that may be found from May to August. The larvae feed under a web on the top-side of Betula leaves. They pupate in a white web covered cocoon on the ground

Identification: This species is very similar to Paraswammerdamia nebulella. S. caesiella is smaller on average does not have a clear line of black dots along the base of the costa and has a clear usually double white spot on the costa before the apex. When this is distinction is unclear genitalia dissection is required for identification. More Info

Verification Grade Comment: Poorly marked / worn examples Grade 4

Recorded in 26 (45%) of 58 10k Squares.
First Recorded in 1892.
Last Recorded in 2020.
Additional Stats

Pseudoswammerdamia combinella  |  Swammerdamia pyrella >

List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
17/10/2020+26TL77 - Mildenhall
10/10/2020+25TM46 - Minsmere/Leiston
10/10/2020+25TM46 - Minsmere/Leiston
04/10/2020+26TM04 - Hadleigh
08/09/2020+25TM34 - Hollesley/Rendlesham Forest
Show Details | 1990 to 2020 | 2000 to 2020 | Graph Key
Express Record Swammerdamia caesiella
We need your records!
Do you have records of Swammerdamia caesiella?
Put your own dot on the map!

Copyright © Jim Wheeler 2021

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Wingspan: 9-13mm
Flight: Two Generations. May-Jun. Jul-Sep.
Foodplant:   Birch
Nat Status: Common
Verification Grade:  Adult: 2
 Immature Adult
Share this page

Underlying maps using Digital Map Data © Norfolk Online Lepidoptera Archive - NOLA™ - Suffolk 2021. © James Wheeler - Norfolk Moths 2007 - 2021. Data © NOLA™ - Suffolk 2021
We use cookies to personalise content and enhance your experience. By clicking OK or using this site, you consent to the use of cookies unless you disable them. Cookies Policy