Species Details

ABH: 70.013

BF: 1702

Family: Geometridae

Subfamily: Sterrhinae

Taxon: Idaea biselata

Authority: (Hufnagel, 1767)

Vernacular: Small Fan-footed Wave

Account: Common in broad-leaved woodland, plantations, heaths and gardens throughout the British Isles The main confusion species is Dwarf Cream Wave I. fuscovenosa, which has dashes, not dots, along termen, and dark streak on basal third of costa. Larva thought to feed on the withered leaves of plants such as Dandelion.

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: 22 — 25 mm

Surrey Flight Period: 10 Jun (1997) — 12 Sep (2025)

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

Foodplant: Plantago sp., Polygonum sp., Rubus sp., Taraxacum sp.

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/idaea-biselata/
Statistics

* Based on adult records only.

Records: 989

Individuals: 2729

Earliest Year: 1899

Latest Year: 2025

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