Species that contain: Extrarius and aestivalis [ 4 ] records

aestivalis, Gobio Girard [C. F.] 1856:189 [25] [Proceedings of the Academy of Natural Sciences of Philadelphia v. 8; ref. 1810] Río San Juan near Cadereita [Cadereyta], Nuevo León, Mexico. Holotype: USNM 79 (lost). Type catalog: Gilbert 1998:35 [ref. 23395]. On p. 25 of separate. •Valid as Hybopsis aestivalis (Girard 1856) -- (Lee et al. 1980:180 [ref. 22416], Robison & Buchanan 1988:181 [ref. 23393]). •Valid as Extrarius aestivalis (Girard 1856) -- (Page & Burr 1991:106 [ref. 18983], Cross & Collins 1995:62 [ref. 23394]). •Valid as Macrhybopsis aestivalis (Girard 1856) -- (Boschung 1992:52 [ref. 23239], Espinosa Pérez et al. 1993:17 [ref. 22290], Etnier & Starnes 1993:192 [ref. 22809], Knight & Hastings 1994:149 [ref. 25560], Stauffer et al. 1995:102 [ref. 23376], Mettee et al. 1996:219 [ref. 25836], Gilbert 1998:35 [ref. 23395], Eisenhour 1999:969 [ref. 24184], Lyons et al. 2000:24 [ref. 26594], Ross et al. 2001:177 [ref. 25978], Underwood et al. 2003:493 [ref. 27126], Nelson et al. 2004:72 [ref. 27807], Eisenhour 2004:13 [ref. 29854], Scharpf 2005:23 [ref. 28940], Miller et al. 2006:130 [ref. 28615], Page & Burr 2011:212 [ref. 31215], Page et al. 2013:73 [ref. 32708], Gilbert et al. 2017:501 [ref. 35222], Echelle et al. 2018:546 [ref. 35765], Page et al. 2023:72 [ref. 40505], Fricke et al. 2024:175 [ref. 41622]). Current status: Valid as Macrhybopsis aestivalis (Girard 1856). Leuciscidae: Pogonichthyinae. Distribution: Southern North America: Texas and New Mexico (U,S.A.) and Chihuahua, Coahuila, Nuevo León and Tamaulipas (northern Mexico). Habitat: freshwater.

australis, Extrarius Hubbs [C. L.] & Ortenburger [A. I.] 1929:26 [University of Oklahoma Bulletin, New Series, no. 434, Publications of the University Oklahoma Biological Survey v. 1 (no. 2) (for Apr. 1929); ref. 10902] Red River, 6-9 miles southwest of Hollis, Harmon County, Oklahoma, U.S.A. Holotype: UMMZ 80347. Paratypes: AMNH 10105 [ex UMMZ 80349] (2); BMNH 1933.1.24.6-8 [ex UMMZ] (3); MCZ 32694 [ex UMMZ 80349] (1); UMMZ 80348-49 (3, 410), 80376 (37), 80383-84 (43, 1), 80410 (1); UOMZ; USNM 93433 (1), 117528 (10). Type catalog: Gilbert 1998:46-47 [ref. 23395]. •Synonym of Hybopsis aestivalis (Girard 1856) -- (Lee et al. 1980:180 [ref. 22416]). •Synonym of Hybopsis aestivalis (Girard 1856) but possibly valid subspecies or species -- (Robison & Buchanan 1988:182 [ref. 23393]). •Valid as Macrhybopsis australis (Hubbs & Ortenburger 1929) -- (Gilbert 1998:46-47 [ref. 23395], Eisenhour 1999:969 [ref. 24184], Underwood et al. 2003:493 [ref. 27126], Nelson et al. 2004:72 [ref. 27807], Miller & Robison 2004:126 [ref. 27931], Eisenhour 2004:28 [ref. 29854], Scharpf 2005:24 [ref. 28940], Page et al. 2013:73 [ref. 32708], Gilbert et al. 2017:501 [ref. 35222], Echelle et al. 2018:546 [ref. 35765], Page et al. 2023:72 [ref. 40505]). Current status: Valid as Macrhybopsis australis (Hubbs & Ortenburger 1929). Leuciscidae: Pogonichthyinae. Distribution: North America: Red River (southern-central U.S.A.) Habitat: freshwater.

hyostomus, Nocomis Gilbert [C. H.] 1884:203 [Proceedings of the United States National Museum v. 7 (no. 423); ref. 1622] East fork of White River, near Bedford, Lawrence County, Indiana, U.S.A. Syntypes: CAS 58626 [ex IU 4798] (4), CAS-SU 888 (30), USNM 34980 (6). Type catalog: Böhlke 1953:34 [ref. 12291], Gilbert 1998:93-94 [ref. 23395]. •Synonym of Hybopsis aestivalis (Girard 1856) -- (Lee et al. 1980:180 [ref. 22416]). •Synonym of Hybopsis aestivalis (Girard 1856), but possibly valid subspecies or species -- (Robison & Buchanan 1988:182 [ref. 23393]). •Synonym of Extrarius aestivalis (Girard 1856), but a valid subspecies -- (Cross & Collins 1995:62 [ref. 23394]). •Synonym of Macrhybopsis aestivalis but a valid subspecies -- (Boschung & Mayden 2004:208 [ref. 27995]). •Valid as Macrhybopsis hyostoma (Gilbert 1884) -- (Gilbert 1998:94 [ref. 23395], Eisenhour 1999:969 [ref. 24184], Luttrell et al. 1999:981 [ref. 24185], Underwood et al. 2003:493 [ref. 27126], Nelson et al. 2004:73 [ref. 27807], Miller & Robison 2004:128 [ref. 27931], Scharpf 2005:24 [ref. 28940], Page & Burr 2011:211 [ref. 31215], Page et al. 2013:73 [ref. 32708], Gilbert et al. 2017:508 [ref. 35222], Echelle et al. 2018:547 [ref. 35765], Bagley et al. 2023:314 [ref. 41241], Page et al. 2023:72 [ref. 40505]). Current status: Valid as Macrhybopsis hyostoma (Gilbert 1884). Leuciscidae: Pogonichthyinae. Distribution: Eastern North America: Ohio River drainage and Mississippi River basin and west coast Gulf slope (southern-central U.S.A.). Habitat: freshwater.

tetranemus, Hybopsis Gilbert [C. H.] 1886:208 [Bulletin of the Washburn Laboratory of Natural History v. 1 (no. 7); ref. 17815] Elm and Spring Creeks, near Medicine Lodge, Barber County, Kansas, U.S.A. Syntypes: (8) whereabouts unknown. Type catalog: Gilbert 1998:155 [ref. 23395]. •Synonym of Hybopsis aestivalis (Girard 1856) -- (Lee et al. 1980:180 [ref. 22416]). •Synonym of Hybopsis aestivalis (Girard 1856), but possibly valid subspecies or species -- (Robison & Buchanan 1988:182 [ref. 23393]). •Synonym of Extrarius aestivalis (Girard 1856), but a valid subspecies -- (Cross & Collins 1995:62 [ref. 23394]). •Valid as Macrhybopsis tetranema (Gilbert 1886) -- (Gilbert 1998:155 [ref. 23395], Eisenhour 1999:974 [ref. 24184], Luttrell et al. 1999:981 [ref. 24185], Underwood et al. 2003:493 [ref. 27126], Nelson et al. 2004:73 [ref. 27807], Eisenhour 2004:9 [ref. 29854], Scharpf 2005:24 [ref. 28940], Page & Burr 2011:213 [ref. 31215], Page et al. 2013:73 [ref. 32708], Gilbert et al. 2017:501 [ref. 35222], Echelle et al. 2018:546 [ref. 35765], Page et al. 2023:72 [ref. 40505]). Current status: Valid as Macrhybopsis tetranema (Gilbert 1886). Leuciscidae: Pogonichthyinae. Distribution: North America: Arkansas River basin (southern-central U.S.A.). Habitat: freshwater.