Species Details

ABH: 66.002

BF: 1632

Family: Lasiocampidae

Subfamily: Poecilocampinae

Taxon: Trichiura crataegi

Authority: (Linnaeus, 1758)

Vernacular: Pale Eggar

Account: Local and declining in open woodland, hedgerows, heathland, moorland, scrub and gardens throughout much of the British Isles, a species of conservation concern under the UK Biodiversity Action Plan Flight-time and coloration are diagnostic. Larva feeds on Blackthorn, Hawthorn, Silver Birch, Downy Birch, Heather and Bilberry, over-wintering as an egg.

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: 33 — 40 mm

Surrey Flight Period: 3 Aug (2010) — 6 Oct (1972)

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

Foodplant: Betula sp. (a birch), Calluna sp., Crataegus sp., Prunus spinosa (Blackthorn), Vaccinium myrtillus (Bilberry).

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

Status: Vulnerable (VU)

UK BAP: BAP(R)

WCA:

Click here to view the full geology map of Surrey.

Verification Grade: 1 — Relatively easily identified 👌

Further Information: https://www.ukmoths.org.uk/species/trichiura-crataegi/

Statistics

* Based on adult records only.

Records: 96

Individuals: 41

Earliest Year: 1919

Latest Year: 2024

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