Pseudacris triseriata illinoensis Smith, 1951, Bull. Chicago Acad. Sci., 9: 190. Holotype: INHS 5982, by original designation. Type locality: "three miles north of Meredosia, Morgan County, Illinois", USA.
Pseudacris triseriata illinoisensis — Schmidt, 1953, Check List N. Am. Amph. Rept., Ed. 6: 76. Incorrect subsequent spelling of Pseudacris triseriata illinoensis Smith, 1951.
Pseudacris streckeri illinoensis — Duellman, 1977, Das Tierreich, 95: 171.
Hyla (Pseudacris) streckeri illinoensis — Dubois, 1984, Alytes, 3: 86.
Pseudacris illinoensis — Collins, 1991, Herpetol. Rev., 22: 42-43. Collins, 1997, Herpetol. Circ., 25: 12; Powell, Collins, and Hooper, 1998, Key Amph. Rept. Continent. U.S. Canada: 38.
Illinois Chorus Frog (Schmidt, 1953, Check List N. Am. Amph. Rept., Ed. 6: 76; Conant, Cagle, Goin, Lowe, Neill, Netting, Schmidt, Shaw, Stebbins, and Bogert, 1956, Copeia, 1956: 176; Collins, Huheey, Knight, and Smith, 1978, Herpetol. Circ., 7: 12; Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 63; Collins, 1997, Herpetol. Circ., 25: 12; Crother, Boundy, Campbell, de Queiroz, Frost, Highton, Iverson, Meylan, Reeder, Seidel, Sites, Taggart, Tilley, and Wake, 2001 "2000", Herpetol. Circ., 29: 13; Frost, McDiarmid, and Mendelson, 2008, in Crother (ed.), Herpetol. Circ., 37: 10; Frost, McDiarmid, Mendelson, and Green, 2012, in Crother (ed.), Herpetol. Circ., 39: 19).
West-central Illinois south in disjunct populations to southeastern Missouri and northeastern Arkansas, USA.
In the Pseudacris nigrita group of Faivovich, Haddad, Garcia, Frost, Campbell, and Wheeler, 2005, Bull. Am. Mus. Nat. Hist., 294: 106 (though this species was not recognized by them, without comment). Reviewed (as Pseudacris streckeri illinoensis) by Smith, 1966, Cat. Am. Amph. Rept., 27: 1-2. Recognized by Collins, 1997, Herpetol. Circ., 25, on the basis of its diagnosability from Pseudacris streckeri and its allopatry. Moriarty and Cannatella, 2004, Mol. Phylogenet. Evol., 30: 409-420, discussed the arguable status of this taxon with respect to Pseudacris streckeri. Trauth, Johnson, and Trauth, 2007, Zootaxa, 1589: 23-32, rejected consideration of this taxon as a species, but suggested to recognize the Arkansas component as a "distinct population segment".
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