By Joe Smith A horrific ghostly-white carnivorous slug with blade-like teeth has been spotted in England after the species is believed to have come over from Ukraine in potted plants. The blind ghost slug, as it is known, feeds on earth worms and was completely unknown to science until 2007. It was first discovered slithering down a lane in Caerphilly in Wales. The most recent sighting shows that the invasive species has crossed over into England, after the mysterious creature was spotted oozing along a path near Stroud in Gloucestershire. In 2007 another specimen of the slug – Selenachlamys y…