Compiled and Edited by:
Nancy B. Simmons and Andrea L. Cirranello
American Museum of Natural History

Your search for Myotis arescens resulted in 1 species-level match:

Myotis Kaup, 1829. Skizz. Entwickel.-Gesch. Nat. Syst. Europ. Thierwelt 1: 106.

Vespertilio myotis Borkhausen, 1797

Myotis arescens Osgood, 1943.
Publ. Field Mus. Nat. Hist., Zool. ser 30: 30, 42, 55.
Valparaíso Myotis

Chile, Porvince of Valparaiso, Hacienda Limache

C Chile

CITES - Not Listed IUCN - Not Evaluated (raised from synonymy).

Previously included in chiloensis, but distinct; see Novaes et al. (2022).

References:

Novaes, R.L.M., A. Rodríguez- San Pedro, M.M. Saldarriaga-Córdoba, A Aguilera=Acuña, D.E. Wilson, and R. Moratelli 2022. Systematic review of Myotis (Chiroptera, Vespertilionidae) from Chile based on molecular, morphological, and bioacoustic data. Zootaxa 5188(5): 430-452. Read abstract.

Osgood, W.H. 1910. The mammals of Chile. Publications Field Museum of Natural History, Zoological Series 30(): 1-268. Read article.