A Ringed Border Moth was found on the GDT reserves in a moth trap by Michael Blencowe in July 2024. This is a mega-rarity which has never been seen in West Sussex before and was only the 4th ever record for Sussex. The species was first seen in mainland UK in Somerset in 2009. It has since been found in three East Sussex locations. Found in forests across Europe, where its caterpillars feed on poplar trees, the ringed border has come to the UK via the Channel Islands and has been seen in Brede, Ticehurst and Rye.
There are only 4 species of net-winged beetle on the British list. The rarest of them all is Cosnard’s Net-winged Beetle (Erotides cosnardi) known from only ten confirmed British individuals. The eleventh was discovered by Tony Davies from Butterfly conservation, on Graffham Down in 2016. Cosnard’s Net-winged Beetle is saproxylic, the larve developing in decayed wood. The beetle found on Graffham Down was near a rotten beech trunk. There’s plenty of old woodland all along the scarp that would suit it, indeed the 5th British specimen was captured at Duncton Hill in 1984.