Lepthoplosternum stellatum und L. ucamara - L-Welse.com Forum

Walter · 11.01.2006, 01:43

Reis, Roberto E. and Cintia C. Kaefer. 2005.
Two New Species of the Neotropical Catfish Genus Lepthoplosternum (Ostariophysi: Siluriformes: Callichthyidae)
Copeia 2005/4: 724 - 731

ABSTRACT

Two new species of the callichthyid catfish genus Lepthoplosternum are described from the Amazon region. Lepthoplosternum stellatum is described from a tributary of Lago Tefé, Amazonas, Brazil, and it is diagnosed from other Lepthoplosternum species by a unique combination of characters: lower lip with pointed, crenulate, triangular fleshy projections lateral to the medial notch, caudal peduncle comparatively shallow (15.7–18.9% SL), and dorsal fin usually with one unbranched and seven branched rays. Lepthoplosternum ucamara is described from the Pacaya-Samiria National Reserve in the lower Ucayali River, Loreto, Peru, and can be diagnosed from other Lepthoplosternum species by the following unique combination of characters: lower lip with short, rounded projections, caudal peduncle comparatively shallow (15.2–17.7% SL), and dorsal fin with two unbranched and six branched rays. The distribution of Lepthoplosternum altamazonicum is extended to include the varzea floodplains of the Solimões River and its tributaries in Brazil. A key to species of Lepthoplosternum is also included.

11.01.2006, 01:43	#1
Walter Herr Prof. Obermoserer Registriert seit: 02.01.2003 Ort: Wien Beiträge: 4.130	Lepthoplosternum stellatum und L. ucamara Reis, Roberto E. and Cintia C. Kaefer. 2005. Two New Species of the Neotropical Catfish Genus Lepthoplosternum (Ostariophysi: Siluriformes: Callichthyidae) Copeia 2005/4: 724 - 731 ABSTRACT Two new species of the callichthyid catfish genus Lepthoplosternum are described from the Amazon region. Lepthoplosternum stellatum is described from a tributary of Lago Tefé, Amazonas, Brazil, and it is diagnosed from other Lepthoplosternum species by a unique combination of characters: lower lip with pointed, crenulate, triangular fleshy projections lateral to the medial notch, caudal peduncle comparatively shallow (15.7–18.9% SL), and dorsal fin usually with one unbranched and seven branched rays. Lepthoplosternum ucamara is described from the Pacaya-Samiria National Reserve in the lower Ucayali River, Loreto, Peru, and can be diagnosed from other Lepthoplosternum species by the following unique combination of characters: lower lip with short, rounded projections, caudal peduncle comparatively shallow (15.2–17.7% SL), and dorsal fin with two unbranched and six branched rays. The distribution of Lepthoplosternum altamazonicum is extended to include the varzea floodplains of the Solimões River and its tributaries in Brazil. A key to species of Lepthoplosternum is also included. __________________ Grüße, Walter