Pseudobiceros gloriosus Newman and Cannon, 1994
Type material location
The holotype is a whole mount of an entire specimen deposited at the Queensland Museum in Brisbane, Australia.
The diagnostic character for this species is the black background with three marginal bands, inner orange, middle pink bordered with a burgundy rim.
External anatomy: Large body with a black background of velvety appearance and three marginal bands: the inner is wide and orange, the middle is narrow and pink and outer is a dark burgundy rim. The pseudotentacles have only the orange line and the burgundy rim. The larger specimens have a narrow pink median line, starting in the cerebral eyespots and ending before the posterior margin. The ventral side is burgundy with the same marginal bands. The body is raised on the longitudinal median line and there are two square and slightly ruffled pseudotentacles with few eyes. The cerebral cluster consists of about 200 eyespost, presence of a long pharynx with simple folds, and two male gonopores close together.
Internal anatomy: The male complex consists of two male gonopores, each one leading to an independent male system. Each system consist of branched vas deferens, a large and oval seminal vesicle connected to a long and coiled ejaculatory duct, a big, elongated, and oval prostatic vesicle and an extremely long cuticular stylet housed in a shallow antrum. There is a single female system with a shallow antrum and a long and narrow vagina directed backwards surrounded by the cement glands.
Ecology and Distribution
This species has been found in Heron Island in the Great Barrier Reef, Australia, and Bagabag Island in North Madang, Papua New Guinea. It also has been reported for Fiji.
Evolution and Systematics
This species was included into the group 2, characterized by the marginal bands, according to the categorization based on the color and color pattern made by Newman & Cannon (1994). In this group, most of the species are black with two marginal bands. Although P. gloriosus and P. uniarborensis posses three rather than two marginal bands as in the rest of the species, they differ on the color of the bands being orange, gray and white in P. uniarborensis and orange, pink and burgundy (wine) bands for P. gloriosus.
Newman, L.J. & Cannon, L.R.G. (1994) Pseudoceros and Pseudobiceros (Platyhelminthes, Polycladida, Pseudocerotidae) from Eastern Australia and Papua New Guinea. Memoirs of the Queensland Museum, 37: 205–266.