Yponomeuta sedella

Alternative names
Orpine Ermine
Grey Ermine
Description

Wingspan about 16 mm.  One of the smallest, but most easily distinguishable of the Yponomeutids, the forewings of this species are a smooth grey, with black spots absent from the apical third, although there is usually one spot centrally amongst the cilia.

Identification difficulty
Recording advice

Due to the rarity of this species in VC55 good photographs are needed, and the specimen should be retained until identification has been confirmed.

Habitat

Where the larval food plants occur.

When to see it

There are two generations, adult moths being on the wing in April and May, and again in August. The moth can be taken at light.

Life History

The larvae feed on Orpine (Sedum telephium), including cultivated varieties, feeding gregariously in a web amongst the leaves.

UK Status

It is fairly locally distributed in the southern half of Britain, north to the Midlands, although there are records from Northumberland too. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as local.

VC55 Status

Rare in Leicestershire and Rutland.

Reference
16.008 BF431

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species profile

Common names
Grey Ermine
Species group:
Moths
Kingdom:
Order:
Family:
Records on NatureSpot:
2
First record:
10/08/2021 (Tinning, John)
Last record:
01/05/2022 (Tinning, John)

Total records by month

% of records within its species group

10km squares with records

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