Species Details

ABH: 71.017

BF: 2007

Family: Notodontidae

Subfamily: Notodontinae

Taxon: Pheosia tremula

Authority: (Clerck, 1759)

Vernacular: Swallow Prominent

Account: Common in woodland, plantations, scrub, gardens and parks throughout the British Isles. The main confusion species is Lesser Swallow Prominent P. gnoma, in which the thin white tornal line of Swallow Prominent is replaced by a very distinct white, wedge-shaped dash. Larva feeds on Aspen, Poplar, Willow and Sallow, over-wintering as a pupa.

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: 50 — 64 mm

Surrey Flight Period: 1 Apr (1968) — 22 Sep (2024)

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

Foodplant: Populus sp. (a poplar), Salix sp. (a sallow).

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

Status: Least Concern (LC)

UK BAP:

WCA:

Click here to view the full geology map of Surrey.

Verification Grade: 2 — Care needed to identify, an image may be required 🤔
Further Information: https://www.ukmoths.org.uk/species/pheosia-tremula/
Statistics

* Based on adult records only.

Records: 711

Individuals: 252

Earliest Year: 1840

Latest Year: 2025

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