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70.018 ~ 1715 ~ Plain Wave ~ Idaea straminata
UK Status

Resident. Local

Montgomeryshire Status

A fairly uncommon species, but it has been recorded from most parts of the county.

Wingspan :  M & F, 28-33mm.

Confusion species

Riband Wave, Portland Riband Wave.
Flight time (Montgomeryshire)


Mainly found in open woodland and scrubby heathland, but also found in gardens.


Little is known about its foodplant in the wild, although in captivity it is known to eat dandelion, knot grass and sallow.

Lifestage data

Overwinters as a larva. Larva August-May. Pupates in the plant debris.
Montgomeryshire photos

Photo by MDH, 14th July 2009, Llanfyllin