Myotis has historically been included in the subfamily Vespertilioninae, but was classified in its own subfamily, Myotinae, by Nancy Simmons in 1998. In her 2005 classification in Mammal Species of the World, Simmons listed the genera Cistugo and Lasionycteris in Myotinae in addition to Myotis itself. However, molecular data indicate that Cistugo is distantly related to all other Vespertilionidae, so that it was reclassified into its own family Cistugidae, and that Lasionycteris belongs in Vespertilioninae. Thus, Myotis is the only remaining genus within Myotinae.
Characteristics
Ears are normally longer than they are wide, with a long and lance-shaped tragus, and thence the English and zoological names (in Greek, myotis and myosotis mean "mouse-ear"). The species within this genus vary in size from very large to very small, with a single pair of mammary glands.
Species
Traditionally, Myotis has been divided into three large subgenera—Leuconoe, Myotis, and Selysius. However, molecular data indicate that these subgenera are not natural groups, but instead unnatural assemblages of convergently similar species. Instead, Myotis species largely fall in two main clades, one containing Old World and the other New World species. However, the Asian species Myotis latirostris falls outside the clade formed by these main groups, and may represent a separate genus, and the Eurasian Myotis brandtii is related to New World species.
Myotis is a highly species-rich genus, and the classification of many species remains unsettled. In the below list, all differences in taxonomy from the 2005 third edition of Mammal Species of the World, are indicated in footnotes.
Literature cited
Borisenko, A.V., Kruskop, S.V. and Ivanova, N.V. 2008. A new mouse-eared bat (Mammalia: Chiroptera: Vespertilionidae) from Vietnam. Russian Journal of Theriology 7(2):57–69.
Han, N., Zhang, J., Reardon, T., Lin, L., Zhang, J. and Zhang, S. 2010. Revalidation of Myotis taiwanensis Ärnbäck-Christie-Linde 1908 and its molecular relationship with M. adversus (Horsfield 1824) (Vespertilionidae, Chiroptera) (subscription required). Acta Chiropterologica 12(2):449–456.*Happold, M. 2005. A new species of Myotis (Chiroptera: Vespertilionidae) from central Africa. Acta Chiropterologica 7(1):9–21.
Ibáñez, C., García-Mudarra, J.L., Ruedi, M., Stadelmann, B. and Juste, J. 2006. The Iberian contribution to cryptic diversity in European bats. Acta Chiropterologica 8(2):277–297.
Jiang, T., Sun, K., Chou, C., Zhang, Z. and Feng, J. 2010. First record of Myotis flavus (Chiroptera: Vespertilionidae) from mainland China and a reassessment of its taxonomic status. Zootaxa 2414:41–51.
Lack, J.B., Roehrs, Z.P., Stanley, C.E., Ruedi, M. and Van Den Bussche, R.A. 2010. Molecular phylogenetics of Myotis indicate familial-level divergence for the genus Cistugo (Chiroptera) (subscription required). Journal of Mammalogy 91(4):976–992.
Matveev, V.A., Kruskop, S.V. and Kramerov, D.A. 2005. Revalidation of Myotis petax Hollister, 1912 and its new status in connection with M. daubentonii (Kuhl, 1817) (Vespertilionidae, Chiroptera). Acta Chiropterologica 7(1):23–37.
Mayer, F., Dietz, C. and Kiefer, A. 2007. Molecular species identification boosts bat diversity. Frontiers in Zoology 4(1):239–255.
Roehrs, Z.P., Lack, J.B. and Van Den Bussche, R.A. 2010. Tribal phylogenetic relationships within Vespertilioninae (Chiroptera: Vespertilionidae) based on mitochondrial and nuclear sequence data (subscription required). Journal of Mammalogy 91(5):1073–1092.
Simmons, N.B. 2005. Order Chiroptera. Pp. 312–529 in Wilson, D.E. and Reeder, D.M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference. 3rd ed. Baltimore: The Johns Hopkins University Press, 2 vols., 2142 pp. ISBN 978-0-8018-8221-0
Stadelmann, B., Lin, L.-K., Kunz, T.H. and Ruedi, M. 2007. Molecular phylogeny of New World Myotis (Chiroptera, Vespertilionidae) inferred from mitochondrial and nuclear DNA genes (subscription required). Molecular Phylogenetics and Evolution 43(1):32–48.
Tsytsulina, K. 2004. On the taxonomical status of Myotis abei Yoshikura, 1944 (Chiroptera, Vespertilionidae). Zoological Science 21:963–966.
