Eriocrania sangii

Alternative names
Purple Spring Jewel
Large Birch Purple

Wingspan 9 to 14 mm. A small purple and gold moth, there are similar species and detailed examination is required for a safe id.

Identification difficulty
ID guidance


Well wooded areas containing Birch.

When to see it

The adults fly in March and April.

Life History

The larva creates a blotch mine in a leaf of birch (Betula), rather like some related species, but unlike the other species, the larva itself is dark grey and is quite distinctive if the mined leaf is held up to the light.

UK Status

Locally frequent, especially in northern England. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as local.

VC55 Status

It appears to be uncommon in Leicestershire and Rutland, where there are few records. L&R Moth Group status = D (rare or rarely recorded).

2.008 BF12

Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map

Species profile

Common names
Large Birch Purple
Species group:
Records on NatureSpot:
First record:
19/04/2016 (Calow, Graham)
Last record:
30/04/2022 (Timms, Sue)

Total records by month

% of records within its species group

10km squares with records

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