The bidentate yellow-shouldered bat (''Sturnira bidens'') is a species of

bat Bats are mammals of the order Chiroptera.''cheir'', "hand" and πτερόν''pteron'', "wing". With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more agile in flight than most ...

in the family Phyllostomidae. It is found in South America.

Taxonomy and etymology

It was described as a new species in 1915 by British zoologist Oldfield Thomas. The

holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of sever ...

had been collected by

Walter Goodfellow Walter Goodfellow (1866–1953) was a British zoological collector and ornithologist. Career Goodfellow began his career as a wildlife collector by collecting specimens for museums, but later concentrated on capturing live birds for private aviar ...

in April 1914 in

Baeza, Ecuador Baeza is a small town in — and canton seat of — Quijos Canton in Napo Province, Ecuador. It is the home of the Quijos-Quichua indigenous people. It is located near the Quijos river on South America. Climate Baeza has a subtropical highland ...

. Thomas described a new, now-defunct genus, ''Corvira'', giving the species the binomial of ''Corvira bidens''. The

species name In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

"''bidens''" is

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

for "two teeth;" of the bidentate yellow bat, Thomas wrote, "lower incisors only two."

Description

It has a forearm length of . It has a long and narrow snout and an overall narrow skull. It has a

dental formula Dentition pertains to the development of teeth and their arrangement in the mouth. In particular, it is the characteristic arrangement, kind, and number of teeth in a given species at a given age. That is, the number, type, and morpho-physiolog ...

of for a total of 30 teeth.

Range and habitat

Its range includes

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = National seal , national_motto = "Firm and Happy f ...

Ecuador Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ' ...

, Colombia, and

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...

. It is found in association with the

Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...

Mountains at elevations of . As of 2018, it was evaluated as a

least-concern species A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T ...

by the IUCN, which is its lowest conservation priority.

References

{{Taxonbar, from=Q1592492 Sturnira Mammals of Colombia Mammals described in 1915 Taxonomy articles created by Polbot Taxa named by Oldfield Thomas Bats of South America Mammals of Peru Mammals of Ecuador Mammals of Venezuela