Therefore, if District and Regional planners are to utilise Biodiversity Hotspot information it is important that EWT works with knowledgeable local wildlife recorders and organizations. EWT is already collaborating with Peter Harvey and Del Smith in the Essex Field Club and Essex Amphibian and Reptile Group to highlight key Wildlife Sites in Essex, and the Trust wishes to develop this approach further. In particular, we would like to ask those who collect species records, whether they would be willing to share summaiy data (e.g. species-richness) to help us ensure key sites, identified through biological recording, arc protected in the new planning system. *County Wildlife. Sites are non-statutory sites recognised for their substantive local nature conservation value, they have no legal protection, but are a material considera- tion in Regional and Local Plans, and when planning applications are determined. They are. brown by many names such as: SNCI 's, SINC s, WHS and Local Wildlife Sites. Essex Field Club maps of invertebrate biodiversity hotspots - can we add to these? 1Peter Harvey and 2Del Smith 1 32 Lodge Lane, Grays, Essex RM16 2YP grays@peterharvey.freeserve.co.uk; 2 12 Tring Gardens, Harold Hill, Romford RM3 9EP delsmith444@btinternet.com As indicated in the previous article, the Essex Field Club is working with the Essex Wildlife Trust to establish a collaborative approach that ensures the Local Development Framework documents and maps currently being prepared by Essex local authorities include as much biological information as possible. This is essential to ensure the selection of County Wildlife Sites and Green Corridors reflect what we consider to be the most valuable wildlife sites, and to enable us to influence planning at an early enough stage to make a real difference. We need to be able to supply as much information as possible in a format that can be used to achieve these aims (i.e. in computerised database form). If you can help, please contact the EFC Council and Luke Bristowe at the Wildlife Trust. We are also keen to enable paper data to be computerised in a thoroughly validated way, and again, if you are interested, we will try and explore funding bids with other interested parties to help these developments happen. Using county data in MapMate, the biological recording and mapping software that is being encouraged by both the Club and the Trust, it is possible to produce maps showing levels of biodiversity in Essex, and we have provisionally done this with the County Recorder data for Arachnida, aculeate Hymenoptera and Diptera as well as other data resulting from our own fieldwork. Maps can be produced that summarise the data in 10 Essex Field Club Newsletter No. 49, January 2006