Limipolycystis friedae, Artois, Tom, Willems, Wim, Revis, Nathalie, Martens, Paul & Schockaert, Ernest, 2012

Artois, Tom, Willems, Wim, Revis, Nathalie, Martens, Paul & Schockaert, Ernest, 2012, New species of Limipolycystis Schilke, 1970 (Rhabdocoela: Kalyptorhynchia: Polycystididae) from the Western Mediterranean, Zootaxa 3325, pp. 26-36 : 31

publication ID	https://doi.org/ 10.5281/zenodo.209538
DOI	https://doi.org/10.5281/zenodo.6180218
persistent identifier	https://treatment.plazi.org/id/D17687D8-FFEA-FFB8-6890-FD15FF101880
treatment provided by	Plazi
scientific name	Limipolycystis friedae
status	sp. nov.

Treatment

Limipolycystis friedae View in CoL n. sp. Artois, Willems & Schockaert

( Figs 3 View FIGURE 3 A–D, 4B)

Holotype. A whole mount, France, Bay of Marseille, near Cap Morgiou, coarse-grained sand, 67 m deep, 7 October 1967 ( SMNH Type-8314).

Paratypes. Three serially-sectioned specimens, from the type locality (HU 524–526).

Etymology. Named after Frieda Boyen, wife of E. Schockaert.

Diagnosis. Species of Limipolycystis with two eyes. Prostate vesicle of type III, rudimentary. Stylet an accessory stylet type II, 77 µm long, with a thickened proximal rim, which is wider than the tubular part, and a spirallyrunning ridge over whole of its length. Without gutter-like projection at the proximal stylet opening. Seminal receptacle a short and simple sclerotised tube, a little swollen near the bursa.

Description. Specimens ± 0.6 mm long (measured on the whole mount), uncoloured, with two eyes ( Fig. 3 View FIGURE 3 A). Habitus and internal organization are almost identical to those of L. sicilicula n. sp.; the main differences between the two species are found in the construction of the stylet, the size of the prostate vesicle and in the morphology of the seminal receptacle.

The stylet ( Figs 3 View FIGURE 3 B–C; 4B) is 77 µm long. It has a thickened proximal rim, without a protrusion proximally from the stylet opening. The stylet shows a somewhat spirally-running, thickened ridge over whole of its length. At one side it is provided with some oblique folds, which follow the course of the external spirally-running muscles that surround the male atrium. The prostate vesicle is extremely reduced. It lies completely within the male atrium, next to the proximal opening of the stylet, and only contains eosinophilic secretion ( Fig. 3 View FIGURE 3 B: pv).

The seminal receptacle ( Fig. 3 View FIGURE 3 D) consists of a sclerotised duct, which connects the proximal part of the oviduct with the bursa. It is a simple tube, without an interposed vesicle. Where it leaves the bursa, it is somewhat swollen and surrounded by circular muscles.