Marine Gammaridea (Crustacea: Amphipoda) from the Indian region. Family Ampithoidae |
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Authors: | P Rabindranath |
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Institution: | (1) Marine Biology Laboratory, University of Kerala, Kerala, India;(2) Department of Zoology, NSS College, Changanacherry — 2, Kerala, India |
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Abstract: | This paper deals with 6 species of marine gammaridean amphipods belonging to the family Ampithoidae. The specimens described were collected from Mandapam (Gulf of Mannar), India and Thankasserry (Quilon, Kerala), India. The collection includes 3 new species, namely Ampithoe (Ampithoe) serraticauda, Ampithoe (Pleonexes) auriculata and Cymadusa imbroglio. Ampithoe (Ampithoe) kergueleni
Stebbing (1888) is a new record for this region, while Ampithoe (Ampithoe) ramondi
Audouin (1826) and Cymadusa filosa
Savigny (1816), the two well-known tropicopolitan members, are briefly redescribed. The study supports Barnard's (1970, p. 23) contention that the genus Pleonexes
Bate (1857) (since reduced to subgeneric status under the genus Ampithoe
Leach, 1814) represents only a grade of evolution , but suggests that the structure of the 1st maxillary and mandibular palps and the outer lobes of the lower lip should also be taken into consideration, in combination with the telsonic processes, for distinguishing Pleonexes from Ampithoe. Based on this concept, a reappraisal of some of the species of the genera is suggested. The subgenus Ampithoe is created to hold those species of Ampithoe showing typical characteristics of the genus. |
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