Findley's myotis

Findley's myotis

Findley's myotis

Myotis findleyi

Findley's myotis (Myotis findleyi ) is a species of vesper bat. It is found only on the Tres Marías Islands off the west coast of Mexico.


It is one of the smallest bats in its genus in the New World.In mass, it is only 2–3 g (0.071–0.106 oz)In total, it is 70–80 mm (2.8–3.1 in) long.Their forearms are 29.5–33.2 mm (1.16–1.31 in) long.Their dorsal fur is dark brown to brownish-black in color.Individual hairs have frosted tips at the distal third of the hair, while the proximal two-thirds of the hairs are dark brown or black.Individual dorsal hairs are 8 mm (0.31 in) long.Their ventral fur is also bicolored; the base of the hair is black, while the tips are buffy.The uropatagium is furred on the ventral surface.Wing membranes are dark brown in color.The keel of the calcar is indistinct.Their feet are relatively large in proportion to their body size at 6.6 mm (0.26 in), and all their toes have sparse hairs.Their ears are relatively small, measuring 11.9 mm (0.47 in) long.Ears have a pronounced notch at the base, and are dark brown in color.The tragus is 5.5 mm (0.22 in) long, and pointed at the tip.Its dental formula is, for a total of 38 teeth.



Biogeographical realms

It is only found in the tropical deciduous forests of the Tres Marías Islands.It is found from 0–600 m (0–1,969 ft) above sea level.

Findley's myotis habitat map
Findley's myotis habitat map
Findley's myotis
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Habits and Lifestyle

It is insectivorous.So far, it has only been captured by placing mist nets over streams and pools.It is unknown if it roosts in caves or tree hollows during the day.




This species is listed as endangered by the IUCN.It is listed as endangered because its extent of occurrence is approximately 900 km2 (350 sq mi), and it occurs in fewer than five locations. There is also a projected decline in the extent and quality of their habitat.Threats to this species include urbanization, livestock farming, deforestation, and invasive species.Some of the bat's habitat is protected, as their range includes Islas Marías Biosphere Reserve.Some of its range also occurs on property owned by Islas Marías Federal Prison.


1. Findley's myotis Wikipedia article -'s_myotis
2. Findley's myotis on The IUCN Red List site -

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