Journal article
Rhamdia guasarensis (Siluriformes: Heptapteridae), a New Species of Cave Catfish from the Sierra De Perija, Northwestern Venezuela
Proceedings of the Biological Society of Washington, Vol.117(4), pp.564-574
01 Jan 2004
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Rhamdia guasarensis n. sp. is described from subterranean waters in the Rio Guasare drainage of northwestern Venezuela. The new species is distinguished from congeners by its concave head profile; medially sutured frontal bones; small, circular vestige of the anterior cranial fontanelle; and troglomorphic characters such as absence of eyes and pigmentation, wide cephalic laterosensory pores, and wide fossae of preoperculomandibular sensory canal in preopercle and dentary. Cave catfish diversity in the Sierra de Perija region of Venezuela is reviewed and compared to cave catfish diversity elsewhere in South America.Original Abstract: -Se describe Rhamdia guasarensis sp. n. proveniente de aguas subterraneas de la cuenca del Rio Guasare en el noroccidente de Venezuela. la nueva especie se diferencia de las restantes especies que conforman el genero por su perfil dorsal de la cabeza cOncavo; huesos frontales suturados medialmente; fontanela craneal anterior reducida a un pequeno foramen circular; y caracteres troglomOrficos tales como ausencia de ojos y pigmentaciOn, poros cefalicos latero sensoriales anchos, fosas ensanchadas del canal sensorial preoperculomandibular en el preoperculo y dentario. la diversidad de bagres cavernicolas de la Sierra de Perija es revisada y comparada con la diversidad de bagres cavernicolas de otras regiones de Suramerica.
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Details
- Title
- Rhamdia guasarensis (Siluriformes: Heptapteridae), a New Species of Cave Catfish from the Sierra De Perija, Northwestern Venezuela
- Creators
- Carlos DonascimientoFrancisco ProvenzanoJohn Lundberg
- Publication Details
- Proceedings of the Biological Society of Washington, Vol.117(4), pp.564-574
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Academy of Natural Sciences of Drexel University
- Identifiers
- 991019335229904721
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