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A.E. Morales et al. (2021. Can. J. Zool. 99(5): 415-422) provided no new evidence to alter the conclusions of C.L. Lausen et al. (2019. Can. J. Zool. 97(3): 267-279). We present background information, relevant comparisons, and clarification of analyses to further strengthen our conclusions. The genesis of the original 'evotis-keenii' study in British Columbia (Canada) was to differentiate Myotis keenii (Merriam, 1895) (Keen's myotis), with one of the smallest North American bat distributions, from sympatric Myotis evotis (H. Allen, 1864) (long-eared myotis), using something other than the suggested postmortem skull size comparison, but no differentiating trait could be found, leading to the molecular genetics examination of C.L. Lausen et al. (2019). We present cumulative data that rejects the 1979 hypothesis of M. keenii as a distinct species. A.E. Morales et al. (2021) inaccurately portray C.L. Lausen et al.'s (2019) question and results; present inaccurate morphological and outdated distribution data; overstate the impact of homoplasy without supporting evidence; and misinterpret evidence of population structure. Key words: Myotis evotis, long-eared myotis, Myotis keenii, Keen's myotis, bats, taxonomy, population genetics, Chiroptera, population structure. A.E. Morales et al. (2021. Can. J. Zool. 99(5): 415-422) ne fournissent aucune nouvelle preuve pouvant modifier les conclusions de C.L. Lausen et al. (2019. Can. J. Zool. 97(3): 267-279). Nous presentons des renseignements contextuels et des comparaisons pertinentes et apportons des precisions sur des analyses pour etoffer davantage nos conclusions. L'etude initiale sur la question<< evotis-keenii>> en Colombie-Britannique (Canada) visait a distinguer Myotis keenii (Merriam, 1895) (vespertilion de Keen), dont l'aire de repartition est l'une de plus petites en Amerique du Nord pour une chauve-souris, du taxon sympatrique Myotis evotis (H. Allen, 1864) (vespertilion a longues oreilles), en employant une autre approche que la comparaison post-mortem de la taille des cranes suggeree, mais aucun caractere distinctif n'avait ete releve, ce qui a mene a l'examen de C.L. Lausen et al. (2019) par des methodes de genetique moleculaire. Nous presentons des donnees cumulatives qui invalident l'hypothese de 1979 voulant que M. keenii soit une espece distincte. AE. Morales et al. (2021) proposent une caracterisation inexacte de la question et des resultats de C.L. Lausen et al. (2019), presentent des donnees morphologiques inexactes et des donnees de repartition obsoletes, accordent une trop grande importance a l'incidence de l'homoplasie sans preuve a l'appui et font une interpretation erronee de linformation touchant a la structure des populations. [Traduit par la Redaction] Mots-cles : Myotis evotis, vespertilion a longues oreilles, Myotis keenii, vespertilion de Keen, chauves-souris, taxonomie, genetique des populations, chiropteres, structure des populations., Introduction The study by Lausen et al. (2019) began out of conservation concern over the inability to differentiate Myotis evotis (H. Allen, 1864) (long-eared myotis) and Myotis keenii (Merriam, 1895) [...]

Abstract: Winter activity of bats is common, yet poorly understood. Other studies suggest a relationship between winter activity and ambient temperature, particularly temperature at sunset. We recorded echolocation calls to [...]

Abstract: In southern Alberta and north-central Montana, there is substantial mtDNA sequence divergence between two groups of the little brown bat, Myotis lucifugus (LeConte, 1831), previously thought to be subspecies [...]

Abstract: Periodic arousal from hibernation among mammalian hibernators is poorly understood. In bats, arousal is often associated with flight. We acoustically monitored two rocky areas along the Red Deer River [...]

Ref.: Can. J. Zool. 86: 700-713. In the print, pdf, and HTML versions, the third sentence of the Abstract should read as follows: Using nuclear microsatellite markers (10 loci), we [...]