Pseudobiceros bedfordi

Pseudobiceros bedfordi (Laidlaw, 1903) Faubel 1984

Languages: English

Overview

Synonyms

Pseudoceros bedfordi Laidlaw, 1903; Pseudoceros micronesianus Hyman, 1955

Author(s): Bolanos, Marcela
Rights holder(s): Bolanos, Marcela

Type material location

The location of the type material is unknown but there is a whole mount and a set of serial histological sections of this species deposited at the Queensland Museum in Brisbane, Australia.

Author(s): Bolanos, Marcela
Rights holder(s): Bolanos, Marcela

Diagnostic Description

The diagnostic characters for this species are the color and color patter. A brown to black background with yellow dots over the entire dorsal surface, and several transverse pink streaks outlined by black.

Author(s): Bolanos, Marcela
Rights holder(s): Bolanos, Marcela

Description

Morphology

External anatomy: The background color varies from brown to black with numerous compacted yellow dots over the entire dorsal surface. Numerous transverse pink streaks outlined by black variable in shape. The margin is black with white dots. The ventral side is pink with a black marginal band. The pseudotentacles are formed by the folds of the anterior margin and are pointed ear-like with few pseudotentacular eyes. Two elongated clusters of cerebral eyes close to each other as one single cluster of about 100 eyespots. A small and narrow pharynx with simple folds. Two male pores closed together and the sucker is well separated from gonopores.
Internal anatomy: The male complex consists of two male gonopores, each one leading to an independent male system. Each male systems consists of unbranched vas deferens, a round seminal vesicle connected to a long and coiled ejaculatory duct, a large spherical prostatic vesicle and an extremely long and narrow stylet housed in a shallow and wide antrum. There is a single female system with a shallow antrum and the vagina is surrounded by the cement glands.

Author(s): Bolanos, Marcela
Rights holder(s): Bolanos, Marcela

Ecology and Distribution

Distribution

This species has been reported for Heron Island in the Great Barrier Reef, Australia, Madang and Laing Island in Papua New Guinea, and has been also reported for Singapore, Philippines, and Micronesia.

Author(s): Bolanos, Marcela
Rights holder(s): Bolanos, Marcela

Evolution and Systematics

Taxonomic Remarks

This species was originally described by Laidlaw (1903) as Pseudoceros bedfordi but after a revision of the cotyleans, Faubel (1984) made the new combination Pseudobiceros bedfordi based on the presence of two male gonopores. Newman & Cannon (1994) included the species into the group 6, characterized by transverse streaks and stripes, according to the categorization, established by the same authors, based on the color and color pattern. Within this group, P. dendrictus and P. flavolineatus are similar to P. bedfordi. However, P. dendrictus has a yellow and brown background, and P. flavolineatus has narrow lines. Pseudoceros micronesianus was described by Hyman (1955) from a damage preserved specimen, but her description completely agrees with the color and color pattern of the alive specimen seen by Newman & Cannon (1994). The authors, based

Author(s): Bolanos, Marcela
Rights holder(s): Bolanos, Marcela

Bibliography

Related literature

Hyman, L.H. (1955) Some polyclad flatworms from Polynesia and Micronesia. Proceedings of the United States National Museum, 105: 65-82.

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.

Faubel, A. (1984) The Polycladida, Turbellaria. Proposal and establishment of a new system. Part II. The Cotylea. Mitteilungen des hamburgischen zoologischen Museums und Instituts, 81: 189–259.

Author(s): Bolanos, Marcela
Rights holder(s): Bolanos, Marcela

Taxonomy

  • Pseudoceros bedfordi Laidlaw, 1903 (synonym)