A COLONY of rare spiders that have never before been found in Britain has been discovered in Blacker Hill.
The sub-species of Harvestman spiders was discovered during the first 'Barnsley Bioblitz' led by a team from the RSPB Old Moor nature reserve.
More than 700 people - including scientists, RSPB staff and volunteers - were recording as many different species of wildlife as possible in 48 hours.
Liane Holdsworth, from the RSPB Old Moor reserve, said: "They're quite big and the one a man from Blacker Hill found, its legs spanned his hand. It is a new species that's been discovered that has females recorded in the colony.
"Other species of Harvestman spiders can be found all over but most people would probably miss them in the garden because they have quite small bodies and the legs are long but thin."
The bioblitz resulted in more than 760 individual species had been recorded, including 106 species of bird, 23 species of mammal and 320 species of plant.
Discoveries included a Baird's Sandpiper, which is a rare wading bird normally found in the United States, a caddis fly at Old Moor that is the first-ever recorded in Yorkshire, along with numerous butterfly, moth and dragonfly species.