| Author Title Journal |
Westervelt CA Jr, Kozloff EN (1990) Syndesmis aethopharynx sp. nov. (Turbellaria: Neorhabdocoela: Umagillidae), from the sea urchin Paracentrotus lividus, with notes on a probable third species from this host. Cah Biol Mar 31(4): 431-437 |
Abstract / Notes
At Banyulus-sur-Mer, Paracentrotus lividus is host to Syndesmis echinorum Francois, 1886 and also to another umagillid, S. aethopharynx sp. nov. This worm is paler and more slender than S. echinorum. Its pharynx, moreover, is a bipartite structure, with a bulbous anterior portion and cylindrical posterior portion. A small part of the common sperm duct is dilated to form a seminal vesicle, and the ejaculatory duct is nearly straight, rather than coiled. The seminal receptacle is exceptionally long and the vagina is correspondingly short. What appears to be a third species of Syndesmis in P. lividus is discussed briefly.
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