Diarsia florida, the fen square-spot, is a moth of the family Noctuidae. The species was first described by Schmidt in 1859. It is found from western Europe, Denmark, southern Norway and southern Sweden, east to Romania and Siberia. Subspecies perturbata is found in south-eastern Turkey.
The wingspan is about 34 mm. The ab. florida Schmidt (10 c) appears to be only a brightly coloured and well-marked form [ of Diarsia rubi ]. It may be a fenland ecotype of rubi.Warren. W. in Seitz, A. Ed., 1914 Die Großschmetterlinge der Erde, Verlag Alfred Kernen, Stuttgart Band 3: Abt. 1, Die Großschmetterlinge des palaearktischen Faunengebietes, Die palaearktischen eulenartigen Nachtfalter, 1914
The larvae feed on Athyrium, Betula, Calluna, Caltha, Lamium, Primula, Rubus, Rumex, Scrophularia, Struthiopteryx, Vaccinium and Urtica species.
Subspecies Diarsia florida florida Diarsia florida perturbata (south-eastern Turkey) Similar species
Diarsia florida is difficult to certainly distinguish from its congeners. See Townsend et al.Martin C. Townsend, Jon Clifton and Brian Goodey (2010). British and Irish Moths: An Illustrated Guide to Selected Difficult Species. (covering the use of genitalia characters and other features) Butterfly Conservation.
Protolampra sobrina (Duponchel, 1843) Diarsia mendica ssp. mendica (Fabricius, 1775) Diarsia mendica ssp. thulei (Staudinger, 1891) Diarsia mendica ssp. orkneyensis (Bytinski-Salz, 1930) Diarsia rubi (Vieweg, 1790) References
External links
Lepiforum e.V.