searchable PDF - Association for Mexican Cave Studies

Cyathura new species: Sbordoni and Argano, 1972:19.Type-Iocality.-Cueva del Ojo de Agua Grande, ParajeNuevo, Cordoba, Veracruz, Mexico.Distribution.-Known only from two caves inVeracruz. See Fig. 8.New record.-Veracruz: Cueva de la Sala de Agua(Ejido Colonia) (det. T. E. Bowman).Discussion.-The genus Cyathura consists primarilyof marine species, but four freshwater forms havebeen described. One of these, C. milloti Chappuis,Delamare, and Paulian, is known only from an interstitialhabitat on Reunion Island; it is not closely relatedto the other three freshwater species. Thesethree species constitute the specus group (Argano,1972b). Cyathura specus Bowman is known from acave in Cuba, C. currassavica Storck from a spring inthe island of Cura~ao, and C. sbordonii from a cavein Veracruz. Cyathura sbordonii is most closely relatedto C. specus. The distribution of the subterraneanCyathura is similar to that of the Cirolanidae,Stenasellidae, Bogidiellidae, and Hadziidae. Argano(1972b) speculates that the three subterranean speciesevolved from a common interstitial ancestorwidely distributed throughout the Caribbean region.The recent discovery of an undescribed species nearValles in San Luis Potosi only serves to emphasize,.".\\\"-\\i-V>-" "\" \ ~ \,\"-~j ,,)\I ,I\I(I,\~JMEXICO//'/I ~.: I;, I~"'- -L. .---t-f....·1~ I I'\._iI'-i.------_._'//i\./I....." i\..., Ii IIIIIGUATEMALAFig. 8.-Distribution of troglobitic isopods of the suborders Anthuridea and Microcerberidea: 1, Mexicerberus troglodytes;2, Cyathura sp.; 3, C. sbordonii.91