Overview
Described in 2017 and named in honor of celebrated naturalist Sir David Attenborough, Myotis attenboroughi is a tiny, highly agile vespertilionid bat endemic exclusively to the Caribbean island of Tobago. For decades considered an aberrant local variant of widespread mainland Neotropical myotis taxa, molecular phylogenetic studies revealed it represents a distinct lineage isolated during Pleistocene sea-level fluctuations.
Biology and Physical Characteristics
Possesses dense, silk-like dorsal fur ranging from warm cinnamon-brown to dark chestnut, contrasting with slightly paler cream-tipped ventral pelage. Its ears are moderately long with a slender, sharply pointed tragus critical for acoustic orientation. The skull is notably small with a high, rounded braincase and delicate dentition specifically adapted to crush the thin chitinous exoskeletons of soft-bodied flying insects.
Behavior and Ecology
A crepuscular and nocturnal aerial hunter that emerges from daytime shelters shortly after sunset. It roosts in small colonies inside coastal sea caves, dark volcanic rock crevices, hollow tree trunks, and occasionally abandoned wooden structures. Utilizing high-frequency frequency-modulated (FM) ultrasonic echolocation calls, it navigates complex forest canopies and swoops low over freshwater streams and coastal estuaries to hawk flying prey.
Conservation and Human Impact
Evaluated as Data Deficient due to limited targeted ecological censuses since its description. Because its global range is restricted to a single 116-square-mile island, any localized disturbance—such as catastrophic Atlantic hurricane landfall, commercial coastal resort clearing, or destruction of maternity cave roosts—poses an existential risk to its total population.
Interesting Factoid
Myotis attenboroughi is the only endemic terrestrial mammal species restricted solely to the island of Tobago, having evolved independently from its nearest mainland relatives over hundreds of thousands of years.
Last updated: October 2026