Posted by Graeme Lyons , Thursday, 20 April 2017 18:33
Last year I beat two immature Philodromus of the low branches of a pine tree at Graffham Common. I was convinced then that it was the Lichen Running-spider Philodromus margaritatus. However, I couldn't be sure. I started an invertebrate survey there today and found this immature female on the same branch! And nowhere else on the site. Now this is a BAP species (Nb) but with very few records. Check out the BAS page on the species here. It has only two records in Sussex both from Lavington (very close to Graffham) in 1979 and 1984. It's not been seen since in the county and this means it's a new species for any Sussex Wildlife Trust reserve.
Although it's not adult and I can't be 100% sure it's that species, I really can't see what else it is. I'll go and look for it again next month but who really cares when it has such a cute face on its abdomen?