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A New and aberrant species of Dugesia (Platyhelminthes, Tricladida, Dugesiidae) from Madagascar

Stocchino, Giacinta Angela and Sluys, Ronald and Manconi, Renata (2014) A New and aberrant species of Dugesia (Platyhelminthes, Tricladida, Dugesiidae) from Madagascar. ZooKeys, Vol. 425 , p. 71-88. eISSN 1313-2970. Article.

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DOI: 10.3897/zookeys.425.7811

Abstract

In this paper we report a new species of Dugesia of the family Dugesiidae from Madagascar, representing the fourth species of freshwater planarian known from this global biodiversity hotspot. In some respects the new species is aberrant, when compared with its congeners, being characterized by a head with smoothly rounded auricles, a peculiar course of the oviducts, including the presence of a common posterior extension, and by the asymmetrical openings of the vasa deferentia at about halfway along the seminal vesicle. Further, it is characterized by a ventral course of the ejaculatory duct with a terminal opening, very long spermiducal vesicles and unstalked cocoons. Its diploid chromosome complement with 18 chromosomes represents an uncommon feature among fissiparous species of Dugesia.

Item Type:Article
ID Code:10183
Status:Published
Refereed:Yes
Uncontrolled Keywords:Tricladida, Dugesia, morphology, karyology, reproduction, new species, Madagascar
Subjects:Area 05 - Scienze biologiche > BIO/05 Zoologia
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze della Natura e del Territorio
Publisher:Pensoft Publishers
eISSN:1313-2970
Deposited On:13 Oct 2014 17:32

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