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Journal Article

A new species of Periclimenes Costa from Utila, Honduras (Crustacea, Decapoda, Pontoniinae)

S. De Grave and A. Anker
Annalen des Naturhistorischen Museums in Wien. Serie B für Botanik und Zoologie
110. Bd. (2008), pp. 139-148
Published by: Naturhistorisches Museum
Stable URL: http://www.jstor.org/stable/41767422
Page Count: 10
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A new species of Periclimenes Costa from Utila, Honduras (Crustacea, Decapoda, Pontoniinae)
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Abstract

Periclimenes colesi sp.n., a new symbiotic pontoniine shrimp, is described from Utila, Honduras, in the Caribbean Sea. All individuals of the new species were collected from oscula of a purple tube sponge, Callyspongia vaginalis, at a depth of about 15 m. Within the heterogeneous genus Periclimenes Costa, P. colesi sp.n. belongs to the exclusively western Atlantic P. iridescens Lebour species complex, differing from all other members of this complex by the combination of following features: ambulatory pereiopods with biunguiculate dactylus, maxilla with bifid endite, subequal second pereiopods and poorly developed setal brush on the propodus of fifth pereiopod; as well as a semi-transparent, slightly iridescent colour pattern, and its association with a sponge host. Periclimenes colesi sp. n., eine neue symbiotische pontoniine Garnele wird von der karibischen Insel Utila, vor der Honduras-Küste, beschrieben. Alle Individuen der neuen Art wurden in den Öffnungen des lilafarbenden Röhrenschwammes Callyspongia vaginalis in einer Wassertiefe von 15 m gefunden. Innerhalb der sehr heterogenen Gattung Periclimenes Costa gehört die neue Art zum ausschließlich im Westatlantik vorkommenden P. iridescens Lebour Artenkomplex. Sie unterscheidet sich von allen anderen Arten dieser Gruppe durch folgende Merkmale: Dactyl der Schreitbeine mit einem Extra-Zähnchen, Maxille mit zweigeteilten Enditen, ungleiche zweite Scherenbeine und einem schwach entwickelten Borstenbüschel am Propod des fünften Pereiopoden, sowie dem halbtransparenten, leicht-schillernden Farbmuster und Vergesellschaftung mit einem Schwamm.

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