Species Details

ABH: 16.015

BF: 437

Family: Yponomeutidae

Subfamily: Yponomeutinae

Taxon: Swammerdamia caesiella

Authority: (Hübner, 1796)

Vernacular: Birch Drab

Account: Common in heathland and open woodland throughout much of the British Isles Larva feeds on Silver Birch and Downy Birch, beneath a silken web, over-wintering as a pupa in a cocoon.

Accounts provided by and used with the kind permission of Mike Wall, Hampshire County Moth Recorder. These will in due course be gradually replaced with species accounts with a Surrey context.

Wingspan: 9 — 13 mm

Surrey Flight Period: 17 Apr (2011) — 15 Aug (2004)

The flight period of overwintering adults are not given. See the flight chart below the distribution map.

Foodplant: Betula sp. (a birch).

Foodplant accounts are from the HOSTS database — Natural History Museum, London, UK. (CC0).

Status: Common

UK BAP:

WCA:

Click here to view the full geology map of Surrey.

Verification Grade: 4 — ️‼️Dissection required️‼️
Further Information: https://www.ukmoths.org.uk/species/swammerdamia-caesiella/
Statistics

* Based on adult records only.

Records: 63

Individuals: 2

Earliest Year: 1999

Latest Year: 2022

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