A New Species Of Fresh-Water Crab Of The Genus Strengeriana From Colombia (Crustacea, Decapoda, Pseudothelphusidae)
1995; Biological Society of Washington; Volume: 108; Issue: 1 Linguagem: Inglês
ISSN
1943-6327
Autores Tópico(s)Fish biology, ecology, and behavior
Resumo— 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. The genus Strengeriana Pretzmann, 1971, comprises a group of small and primitive pseudothelphusid crabs that inhabit mountain streams. Including the new species, the Strengeriana florenciae, new species Fig. 1 Material examined.—Bosque de Florengenus now comprises 14 species, distributed cia, Corregimiento Fiorencia, Municipio in the Sierra Nevada de Santa Marta, and Samana, Caldas Department, 1800 m alt., the Western, Central, and Eastern Cordil10 Nov 1993, J. V. Rueda: 1 male holotype, leras of the Colombian Andes, at altitudes cb 19.2 mm, cl 11.5 mm; (ICN-MHN-CR ranging from 700 to 1800 m above sea level. 1347); 1 male paratype, cb 15.0 mm, cl 9.6 The systematics and biogeography of the mm; (ICN-MHN-CR 1348). Vereda El Dogenus were reviewed by Rodriguez & Camrado, Corregimiento Fiorencia, Municipio pos (1989), and three new species of StrenSamana, Caldas Department, 1700 m alt., geriana have been recently described by 28 Jul 1994, M. R. Campos: 7 males, cb Campos & Rodriguez (1993). Explorations 22.8, 22.0, 21.5, 19.4, 18.2, 15.5, 13.0 mm, of the Central Cordillera of Colombia have cl 13.8, 13.1, 12.6, 11.9, 11.4, 9.8, 8.5 mm; revealed the presence of an additional new 5 females, cb 19.3, 18.3, 17.1, 16.2, 12.7 species described herein. mm,cl 12.2,11.3,10.7,10.3,8.1 mm;(ICNThe terminology used in the description MHN-CR 1351). of the first gonopod is according to the criDiagnosis. — Male first gonopod with teria established by Smalley (1964), and short, inwardly turned, bilobed mesial proRodriguez (1982). The material is deposited cess and lateral lobe with 2 processes, one at the Museo de Historia Natural, Instituto semicircular, distal, and the other rudimende Ciencias Naturales, Universidad Natary, proximal. cional de Colombia, Bogota (ICN-MHN). Description.— Carapace narrow (cb/cl The abbreviations cb and cl are used for 1.67). Cervical grooves straight and deep, carapace breadth and carapace length, rereaching lateral margins. Anterolateral marspectively. gin with depression behind orbits, followed by 7 papillae and second shallow depression Family Pseudothelphusidae Rathbun, 1893 at level of cervical groove; rest of margins Tribe Strengerianini Rodriguez, 1982 Genus Strengeriana Pretzmann, 1971 with approximately 11 papillae, regularly spaced. Postfrontal lobes are small, ovally VOLUME 108, NUMBER 1 99
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