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Brooks M. Burr 
distribution of this species in Kentucky is spotty, which most likely 
reflects inadequate sampling of its preferred habitat. 
Semotilus atromaculatus ( M itch ill). A,B,C,D,E,F,G,H,J,K,L. 
Abundant and generally distributed in small to medium-size streams 
throughout the state. 
Catostomidae — suckers 
Carpiodes carpio (Rafinesque). River carpsucker. A,C,D,E,G,H, 
J,K,L. Generally distributed in large rivers and the lower reaches of their 
major tributaries throughout Kentucky. 
Carpiodes cyprinus (Lesueur). Quillback. C,D,E,G,H,J,K,L. 
Generally distributed in large to medium-size rivers in the eastern half of 
the state and occasional in the western half. 
Carpiodes velifer (Rafinesque). Highfin carpsucker. D,H,J,K. 
Sporadic throughout the eastern half of Kentucky (17 localities), and rare 
in the western half (3 localities). 
Catostomus commersoni (Lacepede). White sucker. A,C,D,E,F, 
G,H,J,K,L. Common and generally distributed in small and medium-size 
streams from Massac Creek, McCracken County, and eastward 
throughout the state. 
Cycleptus elongatus (Lesueur). Blue sucker. D,E,K. Rare in the main 
channel of the Ohio River (10 records within the last 50 years; INHS, 
UL, OSU). Rare in the lower Green, Kentucky and Licking rivers. 
Formerly present in the lower Tennessee and Cumberland rivers 
(Woolman 1892) before impoundment. 
Erimyzon oblongus (Mitchill). Creek chubsucker. A,B,C,D,E,F,G. 
Generally distributed from the lower Salt and Green rivers westward. 
Erimyzon sucetta (Lacepede). Lake chubsucker. A,E. One of the 
rarest species in Kentucky and presently known*from only five localities: 
Obion Creek, Hickman County (KFW, UL, SIUC), Snapneck Creek, 
Fulton County (SIUC), Long Falls Creek, McLean County (SIUC), 
Ohio River at Paducah (Hoyt 1979), and Cypress Creek, Muhlenberg 
County (KNP). 
Hypentelium nigricans (Lesueur). Northern hog sucker. C,D,E,F, 
G,H,J,K,L. Generally distributed from Clarks River to the Big Sandy 
basin, avoiding lowland areas in region E. 
Ictiobus bubalus (Rafinesque). Smallmouth buffalo. A,C,D,E,G, 
J,K,L. Generally distributed in the lower reaches of large, and medium- 
size rivers and reservoirs throughout the state, including the Ohio and 
Mississippi rivers proper. 
Ictiobus cyprinellus (Valenciennes). Bigmouth buffalo. A,C,D,E, 
F,G,H,J,K. Occasional in large and medium-size rivers (and reservoirs) 
throughout Kentucky, excluding the Big Sandy basin. Also present in the 
main channels of the Ohio and Mississippi rivers. 
Ictiobus niger (Rafinesque). Black buffalo. A,D,E. Sporadic in large 
