Se presenta una lista actualizada de los mamíferos vivientes con registros en Chile, compilada en diciembre de 2020. La lista incluye 163 especies silvestres agrupadas en 85 géneros, 31 familias y ocho órdenes. De estas especies, 20 son endémicas del país. También se provee la lista de 22 especies exóticas con poblaciones silvestres en Chile. Dado que aún persisten áreas de Chile que no han sido suficientemente exploradas, al tiempo que varios géneros no han sido adecuadamente revisados, y debido a que el estatus de algunas formas nominales es debatido, avizoramos que esta lista deberá ser actualizada en el futuro cercano.

The Neotropical bat genus Lophostoma (Phyllostomidae: Phyllostominae) currently includes seven species. Two taxa, Lophostoma aequatorialis and Lophostoma silvicolum occidentalis, occur west of the Andes in Ecuador and Peru. In the description of L. aequatorialis, these two taxa were compared solely on the basis of morphology because DNA sequence data could not be obtained from the type series of L. s. occidentalis. Here, comparisons are based on molecular data and extensive morphological comparisons. The congruence between the morphological and molecular variation in our analyses support the recognition of L. occidentalis as a valid species and the consideration of L. aequatorialis as a junior synonym of L. occidentalis. Phylogenetic analysis of Lophostoma based on cytochrome-b sequences indicates that L. occidentalis is closely related to L. schulzi. L. occidentalis can be recognized by its white to pale post-auricular patches; dorsal side of the forearm naked; well-developed lateral projection of mastoid process; wide basioccipital; shallow basisphenoid pits weakly separated by a septum; P3 and P4 distal accessory cusp present; M1 ectocingulum strongly developed; M1 mesostyle absent; M1 mesostylar crest present; M1 anterior ectoflexus deep and posterior ectoflexus shallow; M1 lingual cingulum present; M2 mesostyle absent; and M2 mesostylar crest present.

The bat fauna of the Pacific Tropical rainforest region in Peru is poorly known. Here we report noteworthy range extensions of 12 bat species, including: Diaemus youngi, Chrotopterus auritus, Micronycteris minuta, Mimon crenulatum, Vampyrum spectrum, Chiroderma salvini, Enchisthenes hartii, Noctilio leporinus, Thyroptera discifera, Eptesicus chiriquinus, Rhogeessa io, and Myotis riparius. These document the first confirmed records for the department of Tumbes. All, except E. hartii and N. leporinus, are also first records for the western slope of Peru. The record of R. io is the first for Peru, while that of C. auritus is the first for the Pacific versant of the Andes. In total, 41 bat species are present in the Pacific Tropical rainforests and surrounding dry forests, at the new Parque Nacional Cerros de Amotape, in Tumbes. This region requires urgent conservation programs, because the Pacific Tropical rainforest is threatened by human settlement, and resource exploitation in spite of its protec...