New species of freshwater crabs (Crustacea: Decapoda: Pseudothelphusidae) from Colombia (original) (raw)
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Proceedings of the Biological Society of Washington., 1995
Two new species of the genus Hypolobocera Ortmann, 1897, H kamsarum and H. emberarum, from the Colombian Andes mountains, are described. The presence of a mesial lobe on the first gonopod of H. kamsarum, and a large triangular lateral lobe on the first gonopod of H. emberarum, distinguish these species from all others in the genus. The genus Hypolobocera Ortmann, 1897, les, Universidad Nacional de Colombia, comprises a group of 28 species of fresh-Bogota (ICN-MHN). The abbreviations cb water crabs that inhabit a vast territory in Colombia, Venezuela, Ecuador and Peru. This is by far the most extended distribution in all the pseudothelphusid genera. The systematics and biogeography of the genus has been reviewed by Rodriguez (1982, 1992), and corrections to the diagnosis of several species have been published recently by Rodriguez (1994). The morphology of the first male gono-and cl are used for carapace breadth and carapace length, respectively.
New species of freshwater crabs from the Andes (Crustacea: Decapoda: Pseudothelphusidae)
Three new species of Pseudothelphu sidae are described from the Andes. Strengeriana tolimensis n. sp, belongs, with four other species, to a primitive group of crabs of the Central Cordillera of Colombia. Hypolobocera quevedensis n. sp. is closely related to H. ratbbuni PRETZMANN 1968, both from the western slopes of the Andes of Ecuador. Hypolobocera brevipenis n. sp. forms a natural series with four other species from the eastern slopes of Ecuador and Peru. • During a recent trip throughout the Andes, the junior author had the oppor tunity of collecting freshwater crabs at several localu.es. in Colombia, Ecuador and Peru. Among this material are several interest! ivz specimens, in particular a new species of the genus Strengeriana. This genus groups the most primitive members or the Pseudothelphusidae still surviving in South America, according to an hypotnesis recently formulated !w RODRIGUEZ (in press). The addition of a fourth species to the genus not only completes the pictur...
Zootaxa, 2019
A new species of the genus Phallangothelphusa Pretzmann, 1965 is described, increasing the number of species in the genus to three: P. dispar (Zimmer, 1912), P. magdalenensis Campos, 1998, and P. juansei, new species. The new species is distinguished from its congeners primarily by the morphology of the first male gonopod, specifically the different shape of the distal and proximal projections of the mesial process; lateral process with distal bulge covered with rows of conspicuous spinules, and subtriangular outline of the apex. Phallangothelphusa is endemic to Colombia and its distribution comprises the upper and middle Magdalena valley region, including adjacent slopes of the eastern and central Andes, at elevations ranging from 300 to 1500 m. An updated key for the identification of the species is presented.
Proceedings of the Biological Society of Washington, 2006
We describe a new species of Strengeriana Pretzmann, 1971, S. villaensis, from Villahermosa, Tolima Department, on the eastern slope of the Central Andes. The genus is endemic to Colombia and is distributed in the Sierra Nevada de Santa Marta and the Western and Central Andes, at elevations ranging from 700 to 2000 m. With the addition of S. villaensis the total number of species in the genus rises to 16. This new species is distinguished from its congeners primarily by the morphology of the first male gonopod, particularly by the shape of the mesial, cephalic and lateral lobes, and the mesial and cephalic processes. We present a key for the identification of the species of the genus based on the morphology of the first male gonopod and the third maxilliped.
Zootaxa, 2020
A new species of the genus Phallangothelphusa Pretzmann, 1965 is described, increasing the number of species in the genus to three: P. dispar (Zimmer, 1912), P. magdalenensis Campos, 1998, and P. juansei, new species. The new species is distinguished from its congeners primarily by the morphology of the first male gonopod, specifically the different shape of the distal and proximal projections of the mesial process; lateral process with distal bulge covered with rows of conspicuous spinules, and subtriangular outline of the apex. Phallangothelphusa is endemic to Colombia and its distribution comprises the upper and middle Magdalena valley region, including adjacent slopes of the eastern and central Andes, at elevations ranging from 300 to 1500 m. An updated key for the identification of the species is presented.
Caldasia, 2008
We describe two new species of Neostrengeria Pretzmann, 1965, N. bataensis, from Santa María, Boyacá Department, and N. celioi, from Aguazul, Casanare Department, on the eastern slope of the Eastern Andes. With the addition of the new species, the number of species in the genus rises to 23. These new species are distinguished from their congeners primarily by the morphology of the first male gonopod, particularly by the shape of the lateral and accessory lobes, outline of apex, mesocaudal projection and mesial lobe. The genus Neostrengeria is endemic to Colombia and is distributed in both slopes and the high plain of the Eastern Cordillera, at elevations ranging from 470 to 3000 m. We present a key for the identification of the species based essencially on the morphology of the first male gonopod and pereopods.
Zootaxa, 2010
A new species of the genus Strengeriana Pretzmann, 1971, is described. With the addition of the new species, this genus now includes 15 species, distributed in the Sierra Nevada de Santa Marta, and the Western, Central and Eastern Cordilleras of the Colombian Andes, at altitudes ranging from 700 to 1800 m above sea level. The species are distinguished by morphological characteristics of the first male gonopod.