Pseudoceros bimarginatus Meixner, 1907

Marquina, Daniel, Aguado, M. Teresa & Noreña, Carolina, 2015, New records of Cotylea (Polycladida, Platyhelminthes) from Lizard Island, Great Barrier Reef, Australia, with remarks on the distribution of the Pseudoceros Lang, 1884 and Pseudobiceros Faubel, 1984 species of the Indo-Pacific Marine Region, Zootaxa 4019 (1), pp. 354-377 : 356

publication ID

https://doi.org/ 10.11646/zootaxa.4019.1.14

publication LSID

lsid:zoobank.org:pub:F8043E66-B9B3-4B2D-82B2-061380B08516

DOI

https://doi.org/10.5281/zenodo.6104304

persistent identifier

https://treatment.plazi.org/id/03E987F4-AD7B-FF84-6CBB-CA07FCCAF8B5

treatment provided by

Plazi

scientific name

Pseudoceros bimarginatus Meixner, 1907
status

 

Pseudoceros bimarginatus Meixner, 1907

( Fig. 1 View FIGURE 1 )

Pseudoceros bimarginatum Meixner, 1907: 168 –170.— Marcus 1950: 84.

Pseudoceros corallophilus Hyman, 1954: 223 –224, fig. 2.— Coleman 1990: 31; Cannon & Newman 1994b: 83, fig. 4.

Material examined. AM W.44682, MI QLD 2400, sagitally sectioned.

Description. Elongated body 17 mm long, 9 mm wide. Cerebral eyes horseshoe-shaped. Dorsal colouration: ivory white background, a mid-dorsal bright white line; three marginal bands (inner to outer): orange, black and a yellow rim ( Fig. 1 View FIGURE 1 A). Sucker and genital pores, all at the same distance. Seminal vesicle large and rounded, ventrodorsally oriented. Spherical prostatic vesicle with a narrow and short duct. Penis papilla, forwards oriented, with a conic stylet. Stylet wide, housed in a very deep male atrium ( Fig. 1 View FIGURE 1 B, C, E). Female genital complex ( Fig. 1 View FIGURE 1 D, E) with the characteristic configuration of the genus.

Remarks. Pseudoceros bimarginatus , P. contrarius Newman & Cannon 1995 , P. intermittus Newman & Cannon, 1995 , and P. confusus Newman & Cannon, 1995 share a similar colour pattern ( Newman & Cannon 1995) and coexist on the reefs of Eastern Australia. The characteristic order or the marginal bands (orange-black-yellow) distinguish P. bimarginatus from the other three species mentioned. Newman & Cannon (1994b) noticed that most specimens possess a bright white mid-dorsal line and an extra marginal band inner to the orange one of the same colour, though these lines may be occasionally faint or absent; in the examined specimen the mid-dorsal line is present, but the marginal one is absent.

Distribution. Previously found in the Gulf of Tadjourrah, Somalia ( Meixner 1907), Djibouti ( Gosliner et al. 1996), Heron Island, Australia, and Anilao, Philippines ( Newman & Cannon 1994b), Kwajalein, Marshall Islands ( Newman & Cannon 1998). First report for Lizard Island.

Kingdom

Animalia

Phylum

Platyhelminthes

Class

Rhabditophora

Order

Polycladida

Family

Pseudoceritidae

Genus

Pseudoceros

Loc

Pseudoceros bimarginatus Meixner, 1907

Marquina, Daniel, Aguado, M. Teresa & Noreña, Carolina 2015
2015
Loc

Pseudoceros corallophilus

Cannon 1994: 83
Coleman 1990: 31
Hyman 1954: 223
1954
Loc

Pseudoceros bimarginatum

Marcus 1950: 84
Meixner 1907: 168
1907
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