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18.001 ~ 0464 ~ Plutella xylostella ~ Diamond-back Moth
UK Status

Resident & Migrant. Widespread and often abundant throughout the British Isles.

Montgomeryshire Status

Fairly common throughout the county.

Wingspan :   M & F, 12-17mm.

Confusion species

Flight time & Voltinity (Bivoltine+)


Wherever the foodplant is found.


Brassica spp.

Lifestage data

Spinning. Eggs laid on underside of the foodplant. Larva feeds openly, or from a slight spinning on the underside of the leaf. Pupates in an open network cocoon on the plant or amongst the leaf litter.
Montgomeryshire photos

Photo by MDH, 2nd July 2009, Llanfyllin

Photo by PRW, 12th May 2009, Commins Coch