Recording Spiders

Nursery Web Spider by Niki Clear
Nursery Web Spider © Niki Clear

Spiders are a group of invertebrates that attract both fascination and fear. In the UK there are 647 spider species and of these, 390 species have been recorded in Cornwall and the Isles of Scilly, representing 60% of the British List.

Spiders can be found throughout Cornwall and the Isles of Scilly and have been recorded in every terrestrial 2 km2. Many spiders are very small and often go un-noticed and it has been estimated that an ungrazed meadow may support up to 4 million (4,000,000) spiders per hectare!



How to identify

Identification of spiders to species level without the opportunity to examine the specimen (specifically its genitalia) can be problematic, all the work we do is based on keys and diagrams to these features. The ERCCIS Wildlife Information Service has trained naturalists that have the skill to identify spiders to species level, and we're always very happy  to help. 

Download the ERCCIS 20 most recorded spider species of Cornwall and the Isles of Scilly

For further information on spiders the British Arachnological Society (BAS) has a lot of information on their website .



ERCCIS encourages recording of spiders and further information on the National Spider Recording Scheme




Submit records of spiders onto Online Recording Kernow and Scilly (ORKS)