ETHEOSTOMA COLOROSUM AND E. BELLATOR, TWO NEW DARTERS, SUBGENUS ULOCENTRA, FROM SOUTHEASTERN UNITED STATES Royal D. Suttkus Museum of Natural History, Tulane University Belle Chasse, LA 70037 Reeve M. Bailey Museum of Zoology, The University of Michigan Ann Arbor, MI 48109-1079 Abstract Two new darters, subgenus Ulocentra, are described from Alabama and west-ern Florida. Both are members of the Etheostoma duryi species group with the premaxilla free from the upper lip, and the vomer usually or consistently with one or a few teeth. Both usually have five branchiostegal rays and lack an orange-red band in the anal fin. The coastal darter, E. colorosum, is the only species of Ulocentra inhabiting the coastal streams of southern Alabama and northwestern Florida between the Perdido and Choctawhatchee rivers. It lacks a red ocellus anteriorly on the first dorsal fin, with red or orange color restricted to the last three to five membranes, and has other characters suggesting close affinity with E. tallapoosae and other as yet unnamed Ulocentra species from the Gulf Coastal Plain. Nuptial males off. colorosum have a diagnostic series of small red or orange punctulations along the side and additionally have other associated pigment features. It is a slightly smaller species than E. tallapoosae and the scales are larger. The Warrior darter, E. bellator, is discontinuously distributed in the Black Warrior River system above the Fall Line in Alabama. Nuptial males have a red ocellus in the first membrane of the spinous dorsal fin. There are two series of elongate blotches on the midside separated by a pale area, and the bright orange stripe on the lower side and caudal peduncle is narrow. Two other species of Ulocentra also live in the upper Black Warrior system, E. zonistium with a charac-teristically banded first dorsal fin and E. chermocki, confined to the Turkey Creek drainage, the latter species most closely related to E. bellator but distinguished by different lateral pigmentation and a broad ventrolateral stripe in nuptial males. Introduction Members of Etheostoma subgenus Ulocentra occur in Gulf Coastal drainages east of the Mississippi River, several eastern tributaries to the lower Mississippi River, the Tennessee and Cumberland river systems, and southern tributaries to the Ohio River. The presence of darters of this subgenus south of the Tennes-see River system (Mississippi River drainage) has been known for many years. Etheostoma coosae was the first species to be described from the southern zone of the subgenus (Fowler, 1945). Four decades later, Bailey and Etnier (1988) de-scribed E. zonistium, which is distributed primarily in western, lower tributaries to the Tennessee River but also occurs in a few headwater branches of the Sipsey
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