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70.121 ~ 1789 ~ Scallop Shell ~ Hydria undulata
UK Status

Resident. Local S,C,(N).

Montgomeryshire Status

Resident. A local and fairly uncommon species, with scattered records from much of the county.

Wingspan :  M & F, 32-40mm.

Confusion species

Flight time (Montgomeryshire)


Damp woodland, willow scrub and carr.


Sallows, aspen and bilberry.

Lifestage data

Overwinters as a pupa in a loose cocoon in the soil. Larva August-September.
Montgomeryshire photos

Photo by MDH, 2nd July 2009, Llanfyllin

Photo by PRW, 29th June 2010, Commins Coch

Photo by MW, 13th Sept 2013, Cors Dyfi