“…To our knowledge, no other attempt has been made to delimit the STZ using mayfly distribution. The concise adult life and reduced flight power of the group contribute to its low vagility (Needham, Traver, & Hsu, 1935) resulting in high rates of population isolation, and showing sizeable geographic structure for populations and species (Gonçalves, Takiya, Salles, Peters, & Nessimian, 2017;Massariol, Paresque, & Salles, 2016;Webb et al, 2012). Also, it is a very well-known group in South America, with a research boom in the last three decades (Domínguez & Dos Santos, 2014;Shimano, Salles, & Juen, 2013).…”