Species Details

ABH: 70.132

BF: 1802

Family: Geometridae

Subfamily: Larentiinae

Taxon: Perizoma affinitata

Authority: (Stephens, 1831)

Vernacular: Rivulet

Account: Common in open woodland, hedgerows, roadside verges and chalk downland throughout much of the British Isles The most likely confusion species is Small Rivulet P. alchemillata, which is smaller and has two teeth on the extension of the dark basal area into the white band; Rivulet has a single tooth. Larva feeds on Red Campion, 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: 24 — 30 mm

Surrey Flight Period: 3 May (1995) — 16 Aug (2012)

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

Foodplant: Silene dioica (Red Campion).

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/perizoma-affinitata/
Statistics

* Based on adult records only.

Records: 116

Individuals: 159

Earliest Year: 1931

Latest Year: 2020

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