Petilipinnis, Casatti, Lilian, 2002

Casatti, Lilian, 2002, Petilipinnis, A New Genus For Corvina Grunniens Schomburgk, 1843 (Perciformes, Sciaenidae) From The Amazon And Essequibo River Basins And Redescription Of Petilipinnis Grunniens, Papéis Avulsos de Zoologia 42 (7), pp. 169-181 : 170-171

Petilipinnis , new genus

Type species: Corvina grunniens Schomburgk, 1843: 136 (type not found).

DIAGNOSIS OF THE GENUS

Petilipinnis is distinguishable from all other Sciaenidae genera, with the exception of Menticirrhus , by having only one spine in the anal fin. From Menticirrhus it differs by having 29 to 32 soft dorsal-fin rays and a carrotshaped swimbladder with an anterior pair of short branched appendages (fig. 3 a); in Menticirrhus the dorsal fin has 18 to 27 soft rays and the swimbladder, when present, is reduced to a simple vesicle. A single species is included in the genus: Petilipinnis grunniens ( Schomburgk, 1843) .

Etymology: From the Latin petilus (adjective), slender, and pinna (substantive), fin, in allusion to the slender morphology of the anal fin. Gender feminine.