Halcyon Giant Centipede

Scolopendra alcyona has a greenish-black to jade or turquoise coloured trunk, a brownish black head, bluish-black antennae, and greenish blue ultimate legs, all other legs being yellow in the first article, greenish blue in further ones. In specimens found on Kume-jima island, the legs were wholly yellow. The forcipules and coxosternite are light brown, the sternites pale green, and the pleurons are bluish black with greenish black integument. Scolopendra alcyona is the largest species of centipede in Japan, and grows to twenty centimetres in length and two centimetres in width.

Scolopendra alcyona is found in the Ryukyu Archipelago, specifically on Kume-jima and Okinawa-jima islands, as well as in Taiwan, although it could also be found on other Ryukyu islands, such as Tokashiki-jima, Ishigaki-jima, and Iriomote-jima.

Scolopendra alcyona lives in forested streamside habitats in the Ryukyu archipelago and Taiwan. It hunts giant freshwater prawns. It can often be found under stones in nearby streams.