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73.335 ~ 2124 ~ Fen Square-spot ~ Diarsia florida
UK Status

Resident. Local

Montgomeryshire Status

There is much indecision as to whether this is a separate species from the Small Square-spot, but until this debate is settled the Fen Square-spot will be treated here as a separate species. Probably much more common than the records suggest, being overlooked due to confusion with the Small Square-spot.

Wingspan :  M & F, 30-38mm.

Confusion species

Small Square-spot, Ingrailed Clay, Barred Chestnut.
Flight time (Montgomeryshire)


Fens, marshes and other wet places.


A wide range of herbaceous plants.

Lifestage data

The early stages have not been confirmed in the wild, but probably similar to the Small Square-spot.
Montgomeryshire photos

Photo by PRW, 21st June 2009, Commins Coch