Davey, P., 2009: A local and declining species restricted to chalky soil in south-eastern Britain, the larval foodplant is unknown. In Dorset, the moth has undergone a steep decline and is now likely to be extinct. The last locality from which there were regular sightings was on Portland. Occasional singletons have been seen subsequently, but there have been no potential resident records since 1998. Up until the 1960s, colonies of the moth were established locally on unimproved chalky grassland sites across the county. Soapwort (Saponaria officinalis) has been proposed as a potential foodplant of the larva, but, given the plant's virtual absence from Portland plus the moth's regular appearance historically on the Island plus the plant's scarcity elsewhere, it is unlikely that soapwort is critical to the survival of the species in the county. In the absence of a full understanding of the life cycle of the Bordered Gothic, it is difficult to propose recommendations. It would appear that the loss of so much unimproved grassland on chalky soil has had a detrimental effect on the species: Glanvilles Wootton, (Dale), Portland Bill, four between 6 June 1966 and 3 July 1966 (F Clafton), at MV on 11 July 1987 (Dr J Clarke), Portland, not uncommon pre-1896 (N Richardson), at MV on 13 July 1982, 20 June 1984 (Reverend S Pittis), twelve at MV between 14 May 1995 and 25 June 1995, 14 June 1996, 24 June 1996, 14 July 1996 (M Cade), The Verne, at MV on 4 July 1984 (Dr J Clarke), Church Ope Cove, at MV on 11 June 1975 (B Withers), two on 18 June 1976 (B Goater), two on 9 June 1984 (D Brown), Grove, at MV on 3 June 1998 (D Walbridge), Weymouth, (O Pickard Cambridge), Radipole, at MV on 16 July 1988 (D Arnold), Dorchester, two at light on 19 June 1950, 13 June 1952 (A Lisney), Ringstead, (Dr F Haines), Chamberlaynes, at light on 25 May 1927, 13 June 1928, 2 July 1931, 25 June 1935 (H Andrewes), Bere Wood, (W Parkinson Curtis), Bloxworth, (O Pickard Cambridge), Iwerne Minster, at MV light on 19 June 1958, 22 June 1958, three between 28 June 1959 and 7 July 1959, 26 June 1962 (H Moore), Bryanston, at light on 7 June 1947, two in 1954 (J Howell), Scar Bank, at light on 9 June 1935, at sugar on 10 June 1938, 3 July 1938, at light in 1939, 22 June 1945, 26 May 1946, 6 June 1946, two on 7 June 1946, two on 14 June 1946, two on 15 June 1946, 23 June 1946, 29 June 1946, 30 June 1946, 12 June 1948, 12 June 1949, 9 June 1950 (A Russell), Ballard Down, at light on 4 July 1905 (W Parkinson Curtis), Cranborne, not uncommon in the woods and on the downs at sugar (W Parkinson Curtis), at light on 20 June 1902, 6 June 1905 (F Fisher), Parley Cross, in 1954 (Dr H King), Highcliffe, two in 1953, one in 1954 (B Barton).

Examples of recent potential immigrants trapped coincident with airflows from the near Continent include: West Bexington, 13 June 1997, 25 June 2005 (R Eden), Winfrith, on 26 May 1997 (J Hunnisett), Arne Wood, on 2 July 1987 (B Pickess).

	Retained Specimen / Photograph will be Required.

Recorded in 10 (25%) of 40 10k Squares.
First Recorded in 1927.
Last Recorded in 2005.
(Data up to end 2019)