Espeleonaushonia manningi (Alvarez, Villabos, & Iliffe, 2000)
Synonyms: Naushonia manningi Alvarez, Villabos, & Iliffe, 2000
Taxonomic Characterization: The genus Espeleonaushonia is characterized by eyes with more or less
reduced corneal pigmentation; third maxilliped with well developed exopod; first pereopods equal, robust, elongated,
covered with small acute spines; second pereopod small, not chelate, with brush of dense setae;
fifth pereopod with simple dactylus; second to fifth abdominal pleura with serrated ventral
margin; uropodal endopods and exopods with complete suture. Espeleonaushonia may be separated
from the closely related genus Naushonia by the serrated ventral margins of the second to fifth abdominal pleura, the spinous
mesial and lateral margins of the P1 propodus, as well as the presence of a
brush of dense setae on the P2 dactylus. Espeleonaushonia manningi differs
from E. augudrea mainly by the pigmented corneas, smooth lateral margin of the P1
dactylus and the coxa of P5 not covered by the posterolateral portion of the carapace (Dworschak,
Marin & Anker, 2006).
Disposition of Specimens: Colección Nacional de Crustáceos, Instituto de Biología, Universidad Nacional Autónoma de México, catalog numbers CNCR 17988-90.
Ecological Classification: Stygobitic
Size: Female body length measured 37.6 - 38.6 mm, while the male was 34.8 mm.
Number of Species in Genus: Two, both stygobitic
Species Range: Known only from Liza Bay Cave, Salina Point, Acklins Islands, Bahamas
Closest Related Species: Among the Naushonia, the most closely distributed species, N. crangonoides and N. portoricensis, are not the most morphologically similar to E. manningi. N. lactoalbida from Mozambique is the closest related species with the genus Naushonia (Alvarez, Villalobos, and Iliffe, 2000). E. manningi is most closely related to its only congener, E. augudrea from a cave in Cuba.
Ecology: Both E. augudrea and E. manningi were found in sea-side brackish caves, on silt-covered hard substrates, and so are ecologically different from Naushonia species that typically live in burrows in marine soft sediments (Dworschak, Marin & Anker, 2006). E. manningi was found at only 10 to 20 cm depths in a strongly saline pool (34 ppt). The floor of the pool was covered with bat guano, gravel, and fine silt. The pools were near the entrance and thus recieved low indirect light. Other crustaceans in the pools, included amphipods, copepods, archiannelid polychaetes, and a shrimp from the genus Typhlatya (Alvarez, Villalobos, and Iliffe, 2000).
Evolutionary Origins: The wide variation in total body length and abdomen length ratio between species and Naushonia's geographical distribution pattern are indicative of a long period of isolation among the species (Alvarez, Villalobos, and Iliffe, 2000).
Conservation Status: Restricted to a single anchialine cave in Acklins Island, Bahamas.
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