The Singapore Blue is a large, arboreal species of tarantula from Malaysia and Singapore. These spiders have been known to grow in excess of 9 inches (23 cm) across. The legs are an intense blue with a brown or gold carapace. The male is usually not as vibrant; the species exhibits sexual dimorphism. The generic placement of the species has been questioned, and specimens identified as males of this species may actually be from a different species.