Macrostomida (Platyhelminthes: Rhabditophora) from Argentina, with descriptions of two new species of Macrostomum and of stylet ultrastructure

Publication Type:Journal Article
Year of Publication:2006
Authors:Brusa, F
Journal:Zoological Science
Volume:23
Pagination:853-862
Type of Article:article
Keywords:Macrostomum
Abstract:

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Describes:<br />
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Macrostomum velastylum n. sp.<br />
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Macrostomum puntapiedrensis n. sp.<br />
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Mentions:</address>
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Macrostomum vejdovskyi<br />
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Macrostomum viride<br />
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Microstomum lineare<br />
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<p>
In this work, two new species of the genus Macrostomum (M. velastylum n. sp. and M. puntapiedrensis n. sp.) are described from the littoral benthos of the Río de la Plata estuary, Argentina. This is the first description of members of the Macrostomidae from Argentina, and of a species documented from both limnic and brackish-water environments. Macrostomum velastylum differs from its congeners in the fine details of its stylet, which are described using a new technique for stylet isolation and observation (scanning electron microscope). This method provides new information on stylet structure relative to traditional whole-mount techniques. Macrostomum puntapiedrensis differs from others species of the M. orthostylum group in the length and morphology of the distal tip of the stylet. Further details are provided on additional macrostomids from Argentina, including potential conspecifics of M. vejdovskyi, M. viride, and M. lineare.
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Notes:

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<a href="/sites/macrostomorpha.info/files/Brusa2006.pdf">pdf</a> <span style="font-style: normal" class="Apple-style-span">(</span><span style="font-style: normal" class="Apple-style-span">2676)</span></address>

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