Species Details

ABH: 62.021

BF: 1441

Family: Pyralidae

Subfamily: Phycitinae

Taxon: Oncocera semirubella

Authority: (Scopoli, 1763)

Vernacular: Rosy Knot-horn

Account: Nationally scarce (Nb) on chalk downland and limestone cliffs in England, from Kent to Somerset and in Norfolk. On the Isle of Wight, occurs on the chalk downs, where known since the middle of the nineteenth century. First recorded in Hampshire in 1989, surprisingly in VC12 at Micheldever; since that time there have been very few inland records. Most records, however, are most likely to result from primary immigration from the continent. Wingspan 26-30 mm. Unmistakable. Larva feeds on Bird's-foot Trefoil, White Clover and Common Restharrow.

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: 26 — 30 mm

Surrey Flight Period: 12 Jun (2007) — 22 Sep (2024)

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

Foodplant: Hippocrepis sp., Lotus corniculatus (Common Bird's-foot-trefoil), Medicago sp., Ononis sp., Trifolium repens (White Clover).

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

Status: Nationally Scarce B

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/oncocera-semirubella/

Statistics

* Based on adult records only.

Records: 86

Individuals: 3

Earliest Year: 1985

Latest Year: 2024

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