Geoffroy's tailless bats have a dull-brown color when viewed from above and a gray-brown color when viewed from below. They usually have a silvery-gray color on the shoulders and neck. No tail is present. Nowak (1999) describes the calcar as rudimentary and the cheek teeth as narrow and elongate. The tongue is long and has papillae, and the muzzle is elongate. The average mass for (Nowak, 1999)is 15.2 g. In Peru body length ranges from 61 to 71 mm, skull length ranges from 24.3 to 26.6 mm, and forearm length ranges from 41 to 45 mm.
In central Brazil, males and females were reported to be about the same size. Mean male mass, forearm length and wing area were 14.9 g, 42.1 mm and 91.43 cm2 respectively; mean female mass, forearm length and wing area were 14.7 g, 42.3 mm and 91.77 cm2 respectively. However, in central Trinidad, Heideman observed that “females had slightly longer forearms than males (females 42.3 ± 0.1 mm, males 39.9 ± 0.3 mm).” This difference in forearm length may be related to reproduction, since females carry a single pup until it is ready to fly on its own. (Baumgarten and Vieira, 1994; Heideman, et al., 1992)
No information is available about mating systems of Phyllosomidae. This may be because they are small, nocturnal, and fly--making it difficult to observe mating and courtship.. In fact, data are lacking on the mating system of most bats in the family
More research is needed to understand the father’s role (if any) in postpartum care of offspring. Adult males may sometimes use different roosts than females and young. Baumgarten et al. (1994) found that the number of adult male bats decreased in the cave when pregnant females or females with young were present. (Baumgarten and Vieira, 1994)
It is likley that like all microchiropterans, these bats live longer than other mammals of similar size. Although there are no data on maximum lifespan, or population age composition, one member of this species in captivity is known to have lived longer than 10 years. (Nowak, 1999)
The size of the home range of these bats has not been reported.
More research is needed to understand predation on. It is likely that small mammals, snakes, and birds of prey could take these bats as prey items. Because they are gleaners, taking isects from surfaces, and feeders on fruit and nectar, they are relatively slow in flight, making them more susceptible to aerial predators.
No known negative effects on humans.
Anoura at the CITES website. No data were returned on searches for at the US Federal List website.does not appear on the IUCN Red List. No data were returned on searches for or
Another common name for (Heideman, et al., 1992)is Geoffroy’s hairy-legged long-tongued bat.
Kim Fackler (author), University of Alaska Fairbanks, Link E. Olson (editor, instructor), University of Alaska Fairbanks, Nancy Shefferly (editor), Animal Diversity Web.
living in the southern part of the New World. In other words, Central and South America.
uses sound to communicate
young are born in a relatively underdeveloped state; they are unable to feed or care for themselves or locomote independently for a period of time after birth/hatching. In birds, naked and helpless after hatching.
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
uses smells or other chemicals to communicate
used loosely to describe any group of organisms living together or in close proximity to each other - for example nesting shorebirds that live in large colonies. More specifically refers to a group of organisms in which members act as specialized subunits (a continuous, modular society) - as in clonal organisms.
active at dawn and dusk
The process by which an animal locates itself with respect to other animals and objects by emitting sound waves and sensing the pattern of the reflected sound waves.
animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.
union of egg and spermatozoan
offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).
having the capacity to move from one place to another.
the area in which the animal is naturally found, the region in which it is endemic.
active during the night
an animal that mainly eats all kinds of things, including plants and animals
rainforests, both temperate and tropical, are dominated by trees often forming a closed canopy with little light reaching the ground. Epiphytes and climbing plants are also abundant. Precipitation is typically not limiting, but may be somewhat seasonal.
breeding is confined to a particular season
remains in the same area
reproduction that includes combining the genetic contribution of two individuals, a male and a female
uses touch to communicate
the region of the earth that surrounds the equator, from 23.5 degrees north to 23.5 degrees south.
A terrestrial biome. Savannas are grasslands with scattered individual trees that do not form a closed canopy. Extensive savannas are found in parts of subtropical and tropical Africa and South America, and in Australia.
A grassland with scattered trees or scattered clumps of trees, a type of community intermediate between grassland and forest. See also Tropical savanna and grassland biome.
A terrestrial biome found in temperate latitudes (>23.5° N or S latitude). Vegetation is made up mostly of grasses, the height and species diversity of which depend largely on the amount of moisture available. Fire and grazing are important in the long-term maintenance of grasslands.
uses sight to communicate
reproduction in which fertilization and development take place within the female body and the developing embryo derives nourishment from the female.
Baker, R., K. Jones, Jr., D. Carter. 1976. Biology of Bats of the New World Family Phyllostomatidae. Part I. Lubbock, Texas: Texas Tech Press.
Baker, R., K. Jones, Jr., D. Carter. 1977. Biology of Bats of the New World Family Phyllostomatidae. Part II. Lubbock, Texas: Texas Tech Press.
Baker, R., K. Jones, Jr., D. Carter. 1979. Biology of Bats of the New World Family Phyllostomatidae. Part III. Lubbock, Texas: Texas Tech Press.
Baumgarten, J., E. Vieira. 1994. Reproductive seasonality and development of Anoura geoffroyi (Chiroptera: Phyllostomidae) in central Brazil. Mammalia, 58/3: 415-422.
Gould, E. 1977. Echolocation and Communication. Pp. 247-279 in R Baker, K Jones, Jr., D Carter, eds. Biology of Bats of the New World Family Phyllostomatidae. Part II. Lubbock, Texas: Texas Tech Press.
Heideman, P., P. Deoraj, F. Bronson. 1992. Seasonal Reproduction of a tropical bat, Anoura-geoffroyi, in relation to photoperiod. Journal of Reproduction and Fertility, 96/2: 765-773.
Nowak, R. 1999. Walker’s Mammals of the World: Sixth Edition; Volume 1. Baltimore: The John Hopkins University Press.
Tamsitt, J., D. Nagorsen. 1982. Anoura cultrata. Mammalian Species, 179: 1-5.
Wilson, D., D. Reeder. 1993. Mammal Species of the World: A Taxonomic and Geographic Reference; Second Edition. Washington: Smithsonian Institution Press.
Zortea, M. 2003. Reproductive patterns and feeding habits of three nectarivororus bats (Phyllostomidae: Glossophaginae) from the Brazilian Cerrado. Brazilian Journal of Biology, 63/1: 1-9.