of year - larvae: June-July; September-April (British
leafminers). The second generation larvae overwinter in a state of diapause (UKMoths).
of year - adults: Two generations of this moth occur during the year, the first in April and May, and later from July to August (UKMoths).
in Great Britain & Ireland: Widespread in Britain (NBN
Gateway). Also Yardley Chase, Northants (British
recorded in the Republic of Ireland (Karsholt and van Nieukerken
in Fauna Europaea). See also Ireland's NBDC interactive map.
NBN Grid Map:
elsewhere: Widespread in continental Europe including Austria,
Belgium, Bosnia & Herzogovina, Bulgaria, Corsica, Czech Republic, Danish
mainland, Estonia, Finland, French mainland, Germany, Hungary,
Iceland, Italian mainland, Latvia, Lithuania, Luxembourg, Norwegian mainland,
Poland, Portuguese mainland, Romania, Russia - Central, East, North, Northwest
and South, Sardinia, Sicily, Slovakia, Spanish mainland, Sweden,
Switzerland, The Netherlands and Ukraine (Karsholt and van Nieukerken
in Fauna Europaea).
NBN Interactive Grid Maps of known host species: