EASTERN PACIFIC SPECIES OF THE GENUS UMBRINA (PISCES, SCIAENIDAE) WITH A DESCRIPTION OF A NEW SPECIES

The only cosmopolitan sciaenid genus, Umbrina, is represented in the eastern Pacific Ocean by eight species: U. analis, U. bussingi, U. dorsalis, U. galapagorum, U. reedi, U. roncador, U. winter-steeni n. sp., and U. xanti. Umbrina analis is removed from the synonymy of U. xanti. Lectotypes are designated for U. dorsalis, U. galapagorum and U. xanti. Umbrina wintersteeni, which usually occurs in shallow, protected waters of the southern Gulf of California and the west coast of southern Baja California Sur, apparently is morphologically intermediate between two major groups of eastern Pacific species. Distinguishing characters of U. wintersteeni include peritoneum and inside gill cover with little or no pigment; barbel relatively short and stout; anal fin with six soft rays; anal fin darkly pigmented to dusky; pelvic fins usually dusky; second anal spine of moderate length.