Description of Loraxichthys lexa, new genus and species (Siluriformes: Loricariidae) from the RÃ*o Huallaga Basin, central Peru, with notes on the morp

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Description of Loraxichthys lexa, new genus and species
(Siluriformes: Loricariidae) from the RÃ*o Huallaga Basin, central Peru, with notes on the morphology of the enigmatic Lipopterichthys carrioni Norman, 1935

by NORMA J. SALCEDO

Abstract
A new genus and species of armored catfish, Loraxichthys lexa, collected in 1955 by the Catherwood Foundation Peruvian-Amazon Expedition from the vicinity of Tingo MarÃ*a, Huánuco, is described herein. Loraxichthys is diagnosed by two uniquely derived characters: two to four robust evertible posterior cheek odontodes with hooked tips, longer than odontodes anterior to them but no more than twice their length; and skin folds on dorsal border along first pelvic-fin ray crenulated in mature males. Loraxichthys lexa, new species, is only known from clear water tributaries of the RÃ*o Huallaga in the vicinity of Tingo MarÃ*a. Additionally, notes on the morphology of the enigmatic species Lipopterichthys carrioni are included, and an artificial key for the genera Chaetostoma, Cordylancistrus, Dolichancistrus, Leptoancistrus, Lipopterichthys, and Loraxichthys is provided.

Quelle: https://www.mapress.com/zootaxa/2013/f/zt03640p571.pdf