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A New Species of Freshwater Prawn, Macrobrachium Totonacum (decapoda, Palaemonidae), with Abbreviated Development from Mexico

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[A new species of the genus Macrobrachium from northern Oaxaca, Mexico, with abbreviated larval development, is described. Macrobrachium totonacum new species, is similar to M. tuxtlaense and M. vicconi in exhibiting abbreviated larval development, but differs from these in the length of the first pereiopod and relative proportions of the articles of the second pereiopod. Macrobrachium totonacum occurs in the San Antonio River, which originates in the Cueva del Nacimiento del Río San Antonio where the troglobyte M. villalobosi is found. However, both species differ in pigmentation, the number of rostral spines, proportions of the scaphocerite, relative proportions of the carpus and propodus of the first pereiopod, and the carpus, merus, and propodus of the second pereiopod.

Se describe una nueva especie del género Macrobrachium con desarrollo abreviado del norte de Oaxaca, México. Macrobrachium totonacum nueva especie, es similar a M. tuxtlaense y M. vicconi por exhibir desarrollo larval abreviado, pero difiere de ellas en el largo del primer pereiópodo y las proporciones de los segmentos del segundo pereiópodo. Macrobrachium totonacum se distribuye en el Río San Antonio, que se origina en la Cueva del Nacimiento del Río San Antonio en donde se encuentra el troglobio M. villalobosi, sin embargo ambas especies difieren en la pigmentación, número de espinas rostrales, proporciones del escafocerito, proporciones relativas del carpo y propodio del primer pereiópodo y en el carpo, mero y propodio del segundo pereiópodo., A new species of the genus Macrobrachium from northern Oaxaca, Mexico, with abbreviated larval development, is described. Macrobrachium totonacum new species, is similar to M. tuxtlaense and M. vicconi in exhibiting abbreviated larval development, but differs from these in the length of the first pereiopod and relative proportions of the articles of the second pereiopod. Macrobrachium totonacum occurs in the San Antonio River, which originates in the Cueva del Nacimiento del Río San Antonio where the troglobyte M. villalobosi is found. However, both species differ in pigmentation, the number of rostral spines, proportions of the scaphocerite, relative proportions of the carpus and propodus of the first pereiopod, and the carpus, merus, and propodus of the second pereiopod.

Se describe una nueva especie del género Macrobrachium con desarrollo abreviado del norte de Oaxaca, México. Macrobrachium totonacum nueva especie, es similar a M. tuxtlaense y M. vicconi por exhibir desarrollo larval abreviado, pero difiere de ellas en el largo del primer pereiópodo y las proporciones de los segmentos del segundo pereiópodo. Macrobrachium totonacum se distribuye en el Río San Antonio, que se origina en la Cueva del Nacimiento del Río San Antonio en donde se encuentra el troglobio M. villalobosi, sin embargo ambas especies difieren en la pigmentación, número de espinas rostrales, proporciones del escafocerito, proporciones relativas del carpo y propodio del primer pereiópodo y en el carpo, mero y propodio del segundo pereiópodo.]

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/content/journals/10.1163/156854003321672845
2003-01-01
2016-12-10

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