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Phylum Arthropoda
Subphylum Crustacea
Class Eumalacostraca
Order Mysidacea
Family Mysidae

Heteromysoides dennisi Bowman, 1985

Taxonomic Characterization:
H. dennisi can be distinguished from the other eight species in the genus by the presence of a spiniform process at the distolateral corner of the eyestock and the absence of an apical fissure in the telson. Additional characters of H. dennisi are the absence of spines on the uropodal endopod and the well-developed endite on the maxillipeds.

Ecological Classification: Stygobitic

Size: Adult length up to 2.6 mm.

Number of Species in Genus: Nine, three stygobitic

Genus Range:

  • Bahamas:
    • Grand Bahama: H. dennisi Bowman, 1985
      • Cemetery Cave
  • Cuba: H. spongicola Bacescu, 1968
  • Canary Islands: H. cotti (Calman, 1932)
      • Atlantida Tunnel (Jameos del Agua) and nearby anchialine pools reported in Wilkens, Parzefall, Ocaa & Medina, 1993
  • Australia: H. longiseta Bacescu, 1983; H. macrops Murano, 1988; H. nana Murano, 1998; H. sahulensis Murano 1998
  • Japan:
      • Okinawa in submarine caves: H. simplex  Hanamura and Kase, 2001
  • Somalia: H. berberae Bacescu & Miller, 1985

Species Range: Known only from Cemetery Cave, Grand Bahamas Island, Bahamas

Habitat: Ocean blue holes

Ecology: Collected specimens were free-swimming at a depth of 17 m in an ocean blue hole.

Conservation Status: Restricted to a single ocean blue hole off the south coast of Grand Bahama Island, Bahamas


  • Bowman, T. 1985. Heteromysoides dennisi, a new mysidacean crustacean from Cemetery Cave, Grand Bahama Island. Proceedings of the Biological Society of Washington, 98(4): 945-948, 2 figures.


Contributor: Giuseppe L. Pesce, University of L'Aquila, Italy

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