Martha Rocha - Academia.edu (original) (raw)
Papers by Martha Rocha
Proceedings of the Biological Society of Washington, 1995
A new species of the genus Strengeriana Pretzmann, 1971, S. florenciae, from the Central Cordille... more A new species of the genus Strengeriana Pretzmann, 1971, S. florenciae, from the Central Cordillera of Colombia is described. The new species closely resembles Strengeriana bolivarensis Rodriguez & Campos, 1989, but can be easily distinguished by the shorter and bilobed mesial process and by the absence of a proximal spine at the lateral lobe of the first male gonopod.
Proceedings of the Biological Society of Washington, 1998
A new species of the genus Phallangothelphusa Pretzmann, 1965 is described, increasing the number... more 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.
Zootaxa, May 24, 2010
A new species of the genus Strengeriana Pretzmann, 1971, is described. With the addition of the n... more 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.
Instituto de Investigación de Recursos Biológicos Alexander von Humboldt eBooks, Apr 18, 2016
Bogotá, ColombiaInstituto de Investigación de Recursos Biológicos Alexander von Humbold
Acta Biológica Colombiana, 2004
RESUMEN Se examinaron, determinaron y/o confirmaron taxonómicamente los camarones de agua dulce d... more RESUMEN Se examinaron, determinaron y/o confirmaron taxonómicamente los camarones de agua dulce del género Macrobrachium de seis colecciones en el país. Un total de 21 especies se encuentran en el país, registrándose por primera vez en éste trabajo a ...
The carapace, the abdomen, the third maxilliped and the first male gonopod are the main morpholog... more The carapace, the abdomen, the third maxilliped and the first male gonopod are the main morphological features used for the taxonomical identification of the crabs of the families Trichodactylidae and Pseudothelphusidae. Figures 1 and 2 display these structures.
Zootaxa, Jun 22, 2023
We describe and illustrate a new species of Chaceus Pretzmann, 1965, from the Regional Natural Pa... more We describe and illustrate a new species of Chaceus Pretzmann, 1965, from the Regional Natural Park of the Serranía de Perijá, La Guajira Department, Colombia. This increases the number of Chaceus species to ten, three of them with records only from Venezuela. The species of this genus are distributed in the Sierra de Santa Marta of Colombia and the Serranía de Perijá of Colombia and Venezuela. We distinguished the new species from its congeners mainly by the third maxilliped, with an exopod that is 0.60–0.62 the length of ischium, and by the morphology of the first male gonopod, particularly by the shapes of the mesial, marginal, and lateral processes. We include the distribution of the Chaceus species here and a key for the identification of the species based on the morphology of the first male gonopod.
Proceedings of the Biological Society of Washington, 1998
A new species of freshwater crab of the pseudothelphusid genus Neostrengeria Pretzmann, 1965, A^.... more A new species of freshwater crab of the pseudothelphusid genus Neostrengeria Pretzmann, 1965, A^. perijaensis, is described and illustrated. This discovery means the genus now contains a total of 17 species and 2 subspecies, all endemic to the Eastern Andes of Colombia. The general characteristics of the genus are given, and a key for the identification of the species based primarily on the morphology of the male first gonopod, is presented.
Zenodo (CERN European Organization for Nuclear Research), Dec 31, 2012
A new species of the genus Phallangothelphusa Pretzmann, 1965 is described, increasing the number... more 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.
Zenodo (CERN European Organization for Nuclear Research), Dec 31, 2007
Zootaxa, Sep 10, 2020
A new species of the genus Phallangothelphusa Pretzmann, 1965 is described, increasing the number... more 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.
Zenodo (CERN European Organization for Nuclear Research), Dec 31, 2010
Campos, Martha R. (2010): A new species of freshwater crab of the genus Neostrengeria Pretzmann, ... more Campos, Martha R. (2010): A new species of freshwater crab of the genus Neostrengeria Pretzmann, 1965, from Colombia (Crustacea: Decapoda: Pseudothelphusidae). Zootaxa 2482: 64-68, DOI: 10.5281/zenodo.195447
Proceedings of the Biological Society of Washington., 2004
Caldasia, Jul 1, 2011
A new species o�� ���eshwate� c�a�� o�� the pseudothelphusid �enus species o�� ���eshwate� c�a�� ... more A new species o�� ���eshwate� c�a�� o�� the pseudothelphusid �enus species o�� ���eshwate� c�a�� o�� the pseudothelphusid �enus Neostrengeria P�etzmann, 1965, is desc�i��ed and illust�ated. This discove�y means the �enus now contains 25 species, all o�� which a�e endemic to the Easte�n Andes o�� Colom��ia. The new species is distin�uished ���om thei� con�ene�s p�ima�ily ��y the mo�pholo�y o�� the first male gonopod, particularly by the shape of the accessory lobe, outline of apex and mesial lo��e.
Proceedings of the Biological Society of Washington., 1995
Two new species of the genus Hypolobocera Ortmann, 1897, H kamsarum and H. emberarum, from the Co... more 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.
Proceedings of the Biological Society of Washington., 1984
Tv^o new species of Pseudothelphusidae are described from Colombia. Strengeriana chaparralensis, ... more Tv^o new species of Pseudothelphusidae are described from Colombia. Strengeriana chaparralensis, n.sp. adds a fifth species to a primitive group of crabs from the Central Cordillera; its gonopod resembles that of its nearest geographic relative, S. tolimensis Rodriguez and Diaz, 1981. Chaceus davidi, n.sp. also belongs to a small genus of primitive crabs from the Sierra de Santa Marta; the gonopod has characters of both Chaceus and Hypolobocera. A geographical record is given for Hypolobocera martelatani Pretzmann, 1965, which was originally described from an unknown locality in "Columbia.
Zootaxa, Jan 29, 2019
A new species of the genus Phallangothelphusa Pretzmann, 1965 is described, increasing the number... more 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., 1993
ThvQQ new pseudothelphusid crabs, Strengeriana cajaensis, S. maniformis, and S. flagellata, are d... more ThvQQ new pseudothelphusid crabs, Strengeriana cajaensis, S. maniformis, and S. flagellata, are described from the Central Cordillera of Colombia. The last species displays a rudimentary flagellum on the exopod of the third maxilliped. This peculiar morphology reinforces the hypothesis that there exists a close phylogenetic relationship between the species of Strengeriana from northern South America and the species of Epilobocera from the West Indies.
Proceedings of the Biological Society of Washington, 1995
A new species of the genus Strengeriana Pretzmann, 1971, S. florenciae, from the Central Cordille... more A new species of the genus Strengeriana Pretzmann, 1971, S. florenciae, from the Central Cordillera of Colombia is described. The new species closely resembles Strengeriana bolivarensis Rodriguez & Campos, 1989, but can be easily distinguished by the shorter and bilobed mesial process and by the absence of a proximal spine at the lateral lobe of the first male gonopod.
Proceedings of the Biological Society of Washington, 1998
A new species of the genus Phallangothelphusa Pretzmann, 1965 is described, increasing the number... more 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.
Zootaxa, May 24, 2010
A new species of the genus Strengeriana Pretzmann, 1971, is described. With the addition of the n... more 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.
Instituto de Investigación de Recursos Biológicos Alexander von Humboldt eBooks, Apr 18, 2016
Bogotá, ColombiaInstituto de Investigación de Recursos Biológicos Alexander von Humbold
Acta Biológica Colombiana, 2004
RESUMEN Se examinaron, determinaron y/o confirmaron taxonómicamente los camarones de agua dulce d... more RESUMEN Se examinaron, determinaron y/o confirmaron taxonómicamente los camarones de agua dulce del género Macrobrachium de seis colecciones en el país. Un total de 21 especies se encuentran en el país, registrándose por primera vez en éste trabajo a ...
The carapace, the abdomen, the third maxilliped and the first male gonopod are the main morpholog... more The carapace, the abdomen, the third maxilliped and the first male gonopod are the main morphological features used for the taxonomical identification of the crabs of the families Trichodactylidae and Pseudothelphusidae. Figures 1 and 2 display these structures.
Zootaxa, Jun 22, 2023
We describe and illustrate a new species of Chaceus Pretzmann, 1965, from the Regional Natural Pa... more We describe and illustrate a new species of Chaceus Pretzmann, 1965, from the Regional Natural Park of the Serranía de Perijá, La Guajira Department, Colombia. This increases the number of Chaceus species to ten, three of them with records only from Venezuela. The species of this genus are distributed in the Sierra de Santa Marta of Colombia and the Serranía de Perijá of Colombia and Venezuela. We distinguished the new species from its congeners mainly by the third maxilliped, with an exopod that is 0.60–0.62 the length of ischium, and by the morphology of the first male gonopod, particularly by the shapes of the mesial, marginal, and lateral processes. We include the distribution of the Chaceus species here and a key for the identification of the species based on the morphology of the first male gonopod.
Proceedings of the Biological Society of Washington, 1998
A new species of freshwater crab of the pseudothelphusid genus Neostrengeria Pretzmann, 1965, A^.... more A new species of freshwater crab of the pseudothelphusid genus Neostrengeria Pretzmann, 1965, A^. perijaensis, is described and illustrated. This discovery means the genus now contains a total of 17 species and 2 subspecies, all endemic to the Eastern Andes of Colombia. The general characteristics of the genus are given, and a key for the identification of the species based primarily on the morphology of the male first gonopod, is presented.
Zenodo (CERN European Organization for Nuclear Research), Dec 31, 2012
A new species of the genus Phallangothelphusa Pretzmann, 1965 is described, increasing the number... more 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.
Zenodo (CERN European Organization for Nuclear Research), Dec 31, 2007
Zootaxa, Sep 10, 2020
A new species of the genus Phallangothelphusa Pretzmann, 1965 is described, increasing the number... more 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.
Zenodo (CERN European Organization for Nuclear Research), Dec 31, 2010
Campos, Martha R. (2010): A new species of freshwater crab of the genus Neostrengeria Pretzmann, ... more Campos, Martha R. (2010): A new species of freshwater crab of the genus Neostrengeria Pretzmann, 1965, from Colombia (Crustacea: Decapoda: Pseudothelphusidae). Zootaxa 2482: 64-68, DOI: 10.5281/zenodo.195447
Proceedings of the Biological Society of Washington., 2004
Caldasia, Jul 1, 2011
A new species o�� ���eshwate� c�a�� o�� the pseudothelphusid �enus species o�� ���eshwate� c�a�� ... more A new species o�� ���eshwate� c�a�� o�� the pseudothelphusid �enus species o�� ���eshwate� c�a�� o�� the pseudothelphusid �enus Neostrengeria P�etzmann, 1965, is desc�i��ed and illust�ated. This discove�y means the �enus now contains 25 species, all o�� which a�e endemic to the Easte�n Andes o�� Colom��ia. The new species is distin�uished ���om thei� con�ene�s p�ima�ily ��y the mo�pholo�y o�� the first male gonopod, particularly by the shape of the accessory lobe, outline of apex and mesial lo��e.
Proceedings of the Biological Society of Washington., 1995
Two new species of the genus Hypolobocera Ortmann, 1897, H kamsarum and H. emberarum, from the Co... more 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.
Proceedings of the Biological Society of Washington., 1984
Tv^o new species of Pseudothelphusidae are described from Colombia. Strengeriana chaparralensis, ... more Tv^o new species of Pseudothelphusidae are described from Colombia. Strengeriana chaparralensis, n.sp. adds a fifth species to a primitive group of crabs from the Central Cordillera; its gonopod resembles that of its nearest geographic relative, S. tolimensis Rodriguez and Diaz, 1981. Chaceus davidi, n.sp. also belongs to a small genus of primitive crabs from the Sierra de Santa Marta; the gonopod has characters of both Chaceus and Hypolobocera. A geographical record is given for Hypolobocera martelatani Pretzmann, 1965, which was originally described from an unknown locality in "Columbia.
Zootaxa, Jan 29, 2019
A new species of the genus Phallangothelphusa Pretzmann, 1965 is described, increasing the number... more 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., 1993
ThvQQ new pseudothelphusid crabs, Strengeriana cajaensis, S. maniformis, and S. flagellata, are d... more ThvQQ new pseudothelphusid crabs, Strengeriana cajaensis, S. maniformis, and S. flagellata, are described from the Central Cordillera of Colombia. The last species displays a rudimentary flagellum on the exopod of the third maxilliped. This peculiar morphology reinforces the hypothesis that there exists a close phylogenetic relationship between the species of Strengeriana from northern South America and the species of Epilobocera from the West Indies.