Regional Coverage

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The regions used here are Watsonian vice-counties, subdivisions used in biological recording based on the historic counties of Britain. These remain unchanged by subsequent local government reorganisations, allowing historical and modern data to be more accurately compared.

 
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Maps produced by MapMate® using Digital Map Data Copyright © Collins Bartholomew 2017.  Data overlays Copyright © British Arachnological Society / Spider Recording Scheme 2017.  Reproduction for study and non-profit use permitted, all other rights reserved.