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Phylum Arthropoda
Subphylum Crustacea
Class Eumalacostraca
Order Mysidacea
Family Mysidae

Antromysis (Antromysis) cenotensis Creaser, 1936

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Antromysis cenotensis: after Pérez-Aranda, 1985

Taxonomic Characterization: Blind, eyestalks suboval and separate, carpopropodus of pereopods 2-7 2-merous. Unpigmented. Ommatidia completely absent. Telson slightly longer than wide, with 2 unarticulated central apical spinules. Telson without spines or lateral margins (Bowman, 1977).

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Antromysis cenotensis

Ecological Classification: Stygobitic

Size: Length 3-4 mm from the tip of the rostrum to the end of the telson.

Number of Species in Genus: Six from the subgenus Antromysis. According to Bowman (1977), the genus Antromysis includes four subgenera, viz. Antromysis s.str., Anophelina Bacescu & Orghidan, 1971, Parvimysis Brattegard, 1969 and Surinamysis Bowman, 1977; the last two subgenera do not include true stygobitic species.

Subgenus Range:

  • Costa Rica: A. (Antromysis) anophelinae Tattersall, 1951
  • Cuba: A. (A.) cubanica Bacescu & Orghidan, 1971 and A. (A.) juberthiei Bacescu & Orghidan, 1977
  • Jamaica: A. (A.) peckorum Bowman, 1977
      • Jackson Bay Cave
  • Mexico:
    • Oaxaca: A. (A.) reddelli Bowman, 1977
    • Yucatan: A. (A.) cenotensis Creaser, 1936

Species Range: Widespread in the states of Quintana Roo and Yucatan, Mexico. Locales in Quintana Roo include Actun Ha, Cenote de Juan Coh, Cenote de Las Ruinas, Cenote de San Martin, and Cenote de Santa Domingo. Locales in Yucatan include Balam Canche Cave, San Isidro Cave, Cenote de Kankirixche, Cenote Nohchen, Cenote de San Diego, and Cenote de Xtacabiha. Rocha, Iliffe, Reid, Suarez-Morales, 2000 reported A. (A.) cenotensis in the following Yucatan cenotes- Grutas de Santa Maria, Grutas de Tzab-Nah, Cenote Yunca, Chan-Hoch, Cenote Tos Virlol.

Closest Related Species: Similar to A. (A.) peckorum from Jamaica.

Habitat: Anchialine limestone caves

Ecology: A. cenotensis occurs in large numbers in the dark, interior waters of many cenotes throughout the Yucatan Peninsula.

Life History: The large populations and wide distribution of this species implies an effect reproductive strategy.

Evolutionary Origins: The distribution of stygobitic members of the subgenus Antromysis in Yucatan, Cuba and Jamaica suggests a marine ancestor capable of colonizing coastal caves in the northern Caribbean.

Conservation Status: Inhabits numerous caves and cenotes of the Yucatan Peninsula, Mexico. Classified as endangered by the NOM-059-ECOL-2001 "Norma Oficial Mexicana".


  • Bowman, T.E. 1977. A review of the genus Antromysis (Crustacea: Mysidacea), including new species from Jamaica and Oaxaca, Mexico, and a redescription and new records for A. cenotensis. In: J. Reddell ed., 1977. Studies on the caves and cave fauna of the Yucatan Peninsula. Association for Mexican Cave Studies Bulletin, 6:27-38.
  • Bowman, T.E. 1984. Mysidacea. Stygofauna Mundi, pages 405-409.
  • Pesce G.L., L. Juberthie-Jupeau and F. Passelaigue. 1994. Mysidacea. Encyclopaedia Biospeologica. Societè de Biospéologie, Moulis, Bucarest: 113-119
  • Pérez-Aranda, L. 1985. Mysidae: Antromysis cenotensis. Fauna de los Cenotes de Yucatan, No. 9, Universidad de Yucatan, Merida, 11 pp., 3 figures, 4 maps.
  • Rocha, C.E.F., T.M. Iliffe, J.W. Reid, and E. Suarez-Morales. 2000. Prehendocyclops a new genus of the subfamily Halicyclopinae (Copepoda: Cyclopoida, Cyclopidae) from cenotes of the Yucatan Peninsula, Mexico. Sarsia, 85:119-140, 57 figures, 2 tables.


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