Morley’s Final Catalogue: Very local; three examples taken, with the last kind, at a brilliant light in woods close beside Fritton Lake on 7 and 14 August 1934 (Mly); two at Brandon before 1890 (Whe).

Recent Status: An occasional immigrant with localised breeding colonies, Becoming more frequent.

Life Style: A single brooded species that flies in late summer and comes to light. The larvae feed from spun leaves of deciduous Oak. Young larvae overwinter. Pupation takes place in spring.

Identification: Acrobasis tumidana is a paler brightly coloured Acrobasis species most similar to Acrobasis repandana. From the wing base to the median band the colours are red, sandy brown, white, black, red, sandy brown and cream. The red scales are raised. This is most evident in the band at one third that is best seen from the side and is absent on A. repandana. The colour bands in A. repandana tend to be wider, in particular for the red colour which merges into the sandy brown. There is a white post median line. Colours in the terminal third are less strong but reflect those at the front of the moth.

	Retained Specimen / Photograph will be Required.

Recorded in 18 (31%) of 58 10k Squares. First Recorded in 1934. Last Recorded in 2024. Additional Stats

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