General comments:
Extremely local and rare.

There are three historic Hertfordshire records - from the Sandridge area at Mackerye End (Griffith, 1890), from the Wheathampstead area in 1909 (Gibbs) and from Ashridge, approximately 1909 (Hervey); none can be accurately mapped. For Middlesex, it has been recorded once, in the Ruislip area in the late 1950s. More recently, it was discovered at the Therfield Rifle Range in May 2012 (Chainey) and a male was netted at Clothalll Common on 21st July 2024 (Bishop). A record shown for Welwyn (grid square TL21) in the distribution map is incorrect and results from a typing error); it will be removed, along with tis text, at the next update of the web site.

For Middlesex, it has been recorded once, in the Ruislip area in the late 1950s.

It might be overlooked and certainly should be searched for where the foodplant grows.

Recorded in 4 (10%) of 41 10k Squares. First Recorded in 1890. Last Recorded in 2023. Additional Stats

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