Update: originally I had Megatibicen grossa, but the name is Megatibicen grossus so the gender of the words align.
Megatibicen auletes (Germar, 1834) aka Northern Dusk Singing Cicada is changing to Megatibicen grossus(Fabricius, 1775). This cicada is the largest cicada in North America and is found in the following states in July-August: AL, AR, CT, DE, DC, FL, GA, IL, IN, IA, KS, KY, LA, MD, MA, MI, MS, MO, NE, NJ, NY, NC, OH, OK, PA, SC, TN, TX, VA, WV, WI.
The change comes from the paper: Sanborn, A.F. (2023) Resolving taxonomic issues of cicadas (Hemiptera: Cicadidae) including new combinations, new synonymies, and revised status, with updates on the diversity of the Brazilian cicada fauna and new records for four South American countries. Zootaxa, VOL. 5318 NO. 3: 20 JUL. 2023, 339-362. DOI: 10.11646/ZOOTAXA.5318.3.2.
Megatibicen grossus (as in BIG FLUTE PLAYER BIG):
Reading the paper referenced above, it sounds like Johan Christian Fabricius incorrectly identified an specimen as being from Brazil. He named it Tettigonia grossa in 1775. Allen F. Sanborn compared the holotype of Tettigonia grossa with the holotype for Megatibicen auletes (Cicada auletes) and determined it was the same insect. Since old names take precedence over new names, auletes become grossa.