Selenogyrus caeruleusSelenogyrus caeruleus is a species of tarantula native to Sierra Leone.CharacteristicsSelenogyrus caeruleus has characteristic colouration; grey brown with metallic blue reflections. The labio-sternum mounds are weakly defined and the stridulating organ on the inner side of the chelicerae is present and formed of long clavate setae. The tarsal scopulae are separated by a band of setae. It is 44 mm long. Metatarsal and tarsal segments of legs 3 and 4 are heavily spined. The female's spermathecae are stouter at the base than S. austini.