UKMoths Fen Square-spot Diarsia florida - Distribution map
Please note that the NBN Gateway map service has been terminated as of 1 April 2017.
As soon as a replacement map service is available, distribution maps will hopefully appear here again.
In the meantime, you can get some idea of distribution from the NBN Atlas website.
73.335 BF2124
Fen Square-spot Diarsia florida
(Schmidt, 1859)
Wingspan c.34 mm.
A very difficult species to distinguish from Small Square-spot Diarsia rubi, and possibly an ecotype of that species.
In general, Fen Square-spot is larger, paler and where both occur together, tends to be single-brooded, flying in June and July, where Small Square-spot has two generations. It also flies later in the night.
As indicated by the vernacular name, its favoured habitats tend to be fens and marshy places. It occurs in a number of places in East Anglia, Cambridgeshire and Yorkshire, and doubtless other areas as well.
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