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By Jared Strzelec
Geographic Range
Rhinolophus denti is found in arid savanna regions of western and southern Africa. In West Africa they range from southeastern Senegal to northeastern Ghana. In southern Africa they are found primarily in Namibia, Botswana, and northwestern South Africa. A subspecies, R. d. knorri, is found only in Guinea and has an average forearm length of only 37.5 to 40.5 mm. Populations seem to be patchily distributed and western and southern populations seem to be disjunct, although this may reflect insufficient sampling. (Jacobs, et al., 2008; Churchill, et al., 1997; Jacobs, et al., 2008; Churchill, et al., 1997)
Habitat
Dent's horseshoe bats prefer arid savanna climates and roost in caves and cave-like structures, such as abandoned mine shafts and hollow trees. In winter, when the temperature drops below 11 degrees Celsius, they conserve energy by entering hibernation deep inside of caves. (Jacobs, et al., 2008; Mills, 1997)
Habitat Regions
temperate
; terrestrial ![]()
Terrestrial Biomes
savanna or grassland ![]()
Other Habitat Features
caves
Physical Description
6 g
(0.21 oz)
4.3 to 5.7 mm
(0.17 to 0.22 in)
70 mm
(2.76 in)
Rhinolophus denti is one of the smallest species in the Rhinolophidae family, with an average weight of 6 grams. Their average total length is 70 millimeters with a forearm length between 41 and 43 millimeters. Their fur is long and soft. The color of their fur tends to be light brown or grey on the upper part of their body, with an off white or cream color at the base. The wings are brown with white edges. (Mills, 1997; Watson, 1998; Mills, 1997; Watson, 1998; Mills, 1997; Watson, 1998; Mills, 1997; Watson, 1998)
Other Physical Features
endothermic
; heterothermic
; bilateral symmetry ![]()
Sexual Dimorphism
sexes alike
Reproduction
Nothing is truly known about reproduction in Dent's horseshoe bats. However, they may be similar to other species of Rhinolophus, in which males mate with as many females as possible during hibernation. (Mills, 1997)
1
2 months
There is little reported information on reproduction, however, Dent's horseshoe bats may be similar to closely related Rhinolophus species. In Rhinolophus females generally have a single offspring yearly and temperate species tend to reproduce seasonally. Many temperate species experience delayed implantation. They breed once a year and young are thought to be independent at about 2 months old. (Wilson and Reeder, 2005)
Key Reproductive Features
iteroparous
; seasonal breeding
; gonochoric/gonochoristic/dioecious (sexes separate); viviparous ![]()
Little is known about parental investment in this species. However, like other Rhinolophus species, mothers give birth to live young and nurse and carry them until they are able to fly, usually after approximately two months. (Mills, 1997)
Parental Investment
altricial
; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female, Protecting: Female)
Lifespan/Longevity
There is no available information on longevity in Dent's horseshoe bats. Other small Rhinolophus species can live up to 20 years old. (Wilson and Reeder, 2005)
Behavior
Dent's horseshoe bats roost in colonies. Colonies may have only a few individuals or several hundred. Individuals cluster closely together, both by hanging suspended from the ceiling or clinging to the walls. They seem to prefer humid and cool caves. Dent's horseshoe bats have the ability to enter torpor; an energy saving state by cooling their body temperatures. Torpor allows them to conserve energy while inactive in their roost. Dent's horseshoe bats do not appear to migrate locally or seasonally. (Churchill, et al., 1997; Mills, 1997)
Home Range
There is no information on home ranges in Dent's horseshoe bats. (Mills, 1997)
Communication and Perception
Dent's horseshoe bats have a superb sense of hearing and good eyesight similar to other species in the family. The large fleshy pad around the nose of the animal helps to amplify the ultrasonic calls it emits for echolocation. Echolocation allows them to navigate in total darkness, as well as find and capture insect prey at night. Like other mammals, it is also possible that chemical cues and tactile cues play a role in social communication. (Mills, 1997; Wilson and Reeder, 2005)
Food Habits
Dent's horseshoe bats are nocturnal insectivores, feeding on a variety of small, soft-bodied insects. Insect populations are relatively scarce in the arid habitats these bats occupy and more research is needed to understand their foraging strategies. (Mills, 1997)
Predation
There are no specific reports of predation on Dent's horseshoe bats. In general, bats are preyed on by owls and other raptors in flight and by scansorial predators in their roosts. Like other bats, Dent's horseshoe bats use their cryptic coloration, nocturnal activity, and difficult to access roosts to escape much predation. (Wilson and Reeder, 2005)
Ecosystem Roles
Dent's horseshoe bats are important predators of insects in their native ecosystems.
Economic Importance for Humans: Positive
Dent's horseshoe bats are important members of native ecosystems. Their predation on flying insects can impact agricultural pest populations, providing a benefit to farmers.
Positive Impacts
controls pest population
Economic Importance for Humans: Negative
There are no known adverse effects of Dent's horseshoe bats on humans.
Conservation Status
IUCN Red List of Threatened Species [Link]
Least Concern
More Information
US Federal List [Link]
No special status
CITES [Link]
No special status
State of Michigan List [Link]
No special status
Rhinolophus denti is considered least concern on the IUCN red list. Roosts may be persecuted sometimes, but populations are considered large and widespread, although patchily distributed, currently. (Watson, 1998)
Other Comments
Rhinolophus swinnyi may be best recognized as a part of Rhinolophus denti. (Jacobs, et al., 2008)
For More Information
Find Rhinolophus denti information at
Contributors
Jared Strzelec (author), University of Oregon, Stephen Frost (editor, instructor), University of Oregon, Tanya Dewey (editor), Animal Diversity Web, University of Michigan Museum of Zoology.




