asprellus, Pleurolepis Jordan [D. S.] 1878:38 [Bulletin of the Illinois State Laboratory of Natural History v. 1 (no. 2); ref. 10444] A small rocky tributary of Mississippi River at Warsaw, Hancock County, Illinois, U.S.A. Holotype: INHS 26971. Paratypes: INHS (not found). Type catalog: Collette & Knapp 1967:60 [ref. 20211], Sabaj et al. 1997:277 [ref. 23225]. •Valid as Ammocrypta asprella (Jordan 1878) -- (Lee et al. 1980:615 [ref. 22416], Kuehne & Barbour 1983:59 [ref. 38055], Page 1983:52 [ref. 22189], Robison & Buchanan 1988:406 [ref. 23393], Etnier & Starnes 1993:443 [ref. 22809], Knight & Hastings 1994:150 [ref. 25560], Lyons et al. 2000:44 [ref. 26594], Stephens et al. 2014:544 [ref. 33552]). •Valid as Crystallaria asprella (Jordan 1878) -- (Page & Burr 1991:288 [ref. 18983], Simons 1991:927 [ref. 22446], Boschung 1992:115 [ref. 23239], Stauffer et al. 1995:293 [ref. 23376], George et al. 1996:68 [ref. 22400], Mettee et al. 1996:585 [ref. 25836], Wood & Raley 2000:20 [ref. 24305], Ross et al. 2001:455 [ref. 25978], Nelson et al. 2004:132 [ref. 27807], Miller & Robison 2004:338 [ref. 27931], Boschung & Mayden 2004:484 [ref. 27995], Welsh & Wood 2008:66 [ref. 29462], Scharpf 2008:19 [ref. 30399], Page & Burr 2011:533 [ref. 31215], Page et al. 2013:136 [ref. 32708], Robins et al. 2018:311 [ref. 35886]). Current status: Valid as Crystallaria asprella (Jordan 1878). Percidae: Etheostomatinae. Distribution: North America: Minnesota to Gulf Coast states (central U.S.A.). Habitat: freshwater.