Wittmann & Wirtz 2019
Wittmann & Wirtz 2019
WITTMANN, K.J. & P. WIRTZ, 2019. Revision of the amphiamerican genus Mysidium Dana, 1852 (Crustacea: Mysida: Mysidae), with descriptions of two new species and establishment of two new subgenera. European Journal of Taxonomy, 495: 1–48.
https://doi.org/10.5852/ejt.2019.495
ZooBank
Revised definitions are given for the genus Mysidium Dana, 1852, and its eight previously known species, based on materials from Curaçao, Bonaire, and SE-Brazil, along with the evaluation of published data. Type materials of Diamysis columbiae Zimmer, 1915, M. cubanense Băcescu & Ortiz, 1984, and M. rubroculatum Băcescu & Ortiz, 1984, are examined. A lectotype is designated for D. columbiae Zimmer, 1915, senior synonym of Mysidium columbiae (Zimmer, 1915). Two new species are described, M. triangulare sp. nov. from Curaçao and M. antillarum sp. nov. from Curaçao and Bonaire. Known ranges are extended by first records of M. cubanense at Curaçao and Bonaire, and of M. integrum W.M. Tattersall, 1951, in SE-Brazil. Three morphologically different groups are established at the subgeneric level: the nominotypical subgenus Mysidium Dana, 1852, with M. gracile (Dana, 1852), M. integrum, M. cubanense, M. rubroculatum, and M. triangulare sp. nov. from the West Atlantic plus M. rickettsi Harrison & Bowman, 1987, from the East Pacific; Occimysidium subgen. nov. represented only by M. pumae Ortiz, Hendrickx & Winfield, 2016, from the Pacific coast of Mexico; and finally Orientomysidium subgen. nov. comprising M. columbiae and M. antillarum sp. nov. from the West Atlantic. The poorly known M. iliffei Băcescu, 1991, is not assigned to any subgenus. A key to the resulting three subgenera and ten nominal species of the genus Mysidium Dana, 1852, is given.
taxonomy; first description; key to species; range extensions; subtropical to tropical West Atlantic
Mysidium; Orientomysidium nov. subgen.; Occimysidium nov. subgen; Mysidium (Mysidium) gracile; Mysidium (Mysidium) integrum; Mysidium (Mysidium) cubanense; Mysidium (Mysidium) rickettsi; Mysidium (Mysidium) rubroculatum; Mysidium (Mysidium) triangulare nov. spec.; Mysidium (Occimysidium) pumae nov. comb.; Mysidium (Orientomysidium) columbiae nov. comb.; Mysidium (Orientomysidium) antillarum nov. spec..; Mysidium iliffei; Diamysini; Mysidae; Mysida