id difficulty for Tegenaria atrica
Identification difficulty rating=4
The Recording Scheme would require confirmation in the majority of cases, e.g. specimen having been checked by the appropriate Area Organiser or an acknowledged expert.
|Adult males easy to differentiate from others in the Tegenaria atrica group; females can easily be mistaken for T. saeva. Clearing and spermatheca examination is required for absolute ident.|
Males and females may present different identification difficulty in spiders. These identification ratings are based on the most difficult identification. New species may become recognised or become part of the British fauna e.g. from Europe, so identification should be made with the awareness that this is a possibility and that confirmation may be needed in the form of a voucher specimen.