Norfolk status Scarce. Characteristic sharply angled median fascia edged with dark ground colour. Inhabits borders of ponds, lakes and slow moving streams where foodplant Reed Sweet-grass grows in standing water.
Records from the Norfolk Broads and Foulden Common (2016).
Leaf-mine: April - May. July - Aug. Narrow mine downwards until reaching water surface, when either returns upward or changes leaf.
[MBGBI vol3 p368]
Determination by Genitalia Examination (gen. det.) Required
Recorded in 5 (7%) of 69 10k Squares. First Recorded in 1874. Last Recorded in 2020. Additional Stats
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