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A new mud shrimp of the genus Paragourretia Sakai, 2004, from the Gulf of Mexico (Crustacea: Decapoda: Ctenochelidae)

Journal Article · · Zootaxa
 [1];  [2]
  1. Univ. of Louisiana, Lafayette, LA (United States); Smithsonian Institute, Washington, DC (United States). National Museum of Natural History; OSTI
  2. Naturhistorisches Museum, Wien (Austria)
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A new western Atlantic member of the ctenochelid genus Paragourretia Sakai, 2004 is described to accommodate a single unique specimen collected by dredge on muddy rubble substrates of the continental shelf in the southwestern Gulf of Mexico. Paragourretia sandrae n. sp. closely resembles Paragourretia biffari, another regionally reported species for which photographs and additional illustrations are herein provided. While P. biffari and P. sandrae n. sp. are similar in habitus and known habitat o the more commonly encountered confamilial Dawsonius latispina, the third maxillipeds in Paragourretia bear distinct exopods that are absent in Dawsonius. As in eight other world congeners, P. sandrae n. sp. differs from both P. biffari and Dawsonius in lacking triangular ventrolateral projections on the sixth pleomere. It is further distinguished from P. biffari by lacking a distinctly incised notch in the anterodistal margin of the uropodal exopod and by absence of a median terminal spine on the telson. Additional sequence-quality specimens of P. sandrae n. sp. are required to clarify its relationships within the polyphyletic genus Paragourretia on a molecular genetic basis.

Research Organization:
Louisiana State Univ., Baton Rouge, LA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF)
Grant/Contract Number:
FG02-97ER12208
OSTI ID:
2417745
Journal Information:
Zootaxa, Journal Name: Zootaxa Journal Issue: 3 Vol. 5284; ISSN 1175-5326
Publisher:
Magnolia PressCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

59 BASIC BIOLOGICAL SCIENCES
Axiidea
Gulf of Mexico
Paragourretia
Zoology
infauna
new species