Plutella porrectella

Alternative names
Streaked Diamond-back
Grey-streaked Smudge
Grey-streaked Diamond-back

Wingspan 14 to 17 mm. This close relative of the familiar Diamond-back Moth (Plutella xylostella) is slightly larger and more striated in appearance. The antennae have three darkish rings toward the tip.

Identification difficulty

Around Dame’s-violet

When to see it

It flies during May and again in July to August. It is nocturnal and is attracted to light, and can be easily disturbed from the foodplant by day.

Life History

The larval foodplant is Dame's-violet. The larvae feed in April-May and June-July, distorting or connecting the leaves with a small amount of silk. It pupates in a distinctive white silk cocoon with a large open mesh, on the underside of a leaf.

UK Status

It is fairly common in Britain in the vicinity of the foodplant. In the Butterfly Conservation’'s Microlepidoptera Report 2011 this species was classified as common.

VC55 Status

Occasional in Leicestershire and Rutland. L&R Moth Group status = C (very scarce resident or rare migrant).

18.003 BF465

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
Grey-streaked Smudge
Species group:
Records on NatureSpot:
First record:
21/06/2003 (Skevington, Mark)
Last record:
20/05/2023 (Dejardin, Andrew)

Total records by month

% of records within its species group

10km squares with records

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