Morley’s Final Catalogue: Not uncommon among sallows; almost unnoted in the west. Bentley Woods in August 1895 (Baylis); Ipswich; Leiston (Grey); common on aspens by the River Aide at Farnham during July and in Blythburgh Wood during September (Mly); Lowestoft (Bd); Gorleston in June (D). Five on Black Poplar at Mildenhall in 1933 (Whit).
Recent Status: A common species in Suffolk.
Life Style: A single brooded species flying during July, August and September. The larvae feed on the catkins and between spun leaves of Salix and Populus species (including P. tremula). They pupate in the larval habitation or on the ground.
Identification: This species and E. cinereana have been debated as either varieties or distinct species for over a century A paper in Zootaxa in 2012 however put this discussion to rest by showing them as distinct species by DNA bar coding. E. nisella can have an ochreous brown patch or shading on the dorsum or this may sometimes be black. E. cinereana does not, but E. nisella can also be without distinctive markings in such cases genitalia dissection is required for identification. This is straight-forward for females but relies on a difference in the number of deciduous cornuti in the male. When the cornuti are still present and when intermediates occur it can be difficult to identify the males. More Info
Recorded in 37 (64%) of 58 10k Squares. First Recorded in 1895. Last Recorded in 2021. Additional Stats