Species Details

ABH: 62.024

BF: 1445

Family: Pyralidae

Subfamily: Phycitinae

Taxon: Rhodophaea formosa

=Oncocera formosa

Authority: (Haworth, 1811)

Vernacular: Beautiful Knot-horn

Account: Local in hedgerows throughout much of south-east England. Distributed widely across Hampshire and the Isle of Wight, and apparently increasing again after the sharp decreases associated with Dutch Elm Disease. Wingspan 20-23 mm. This species can be recognised by the soft red and grey mottling of the forewing, and prominent median blotch. Larva feeds on Elm, living within a spun or rolled leaf, and 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: 20 — 23 mm

Surrey Flight Period: 18 Jun (1998) — 27 Jul (2001)

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

Foodplant: Ulmus procera (English Elm).

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

Status: Local

UK BAP:

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/rhodophaea-formosa/

Statistics

* Based on adult records only.

Records: 8

Individuals: 0

Earliest Year: 1996

Latest Year: 2007

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