By Matthew Ross
Geographic Range
The geographic range of Cape horseshoe bats (Rinolophus capensis), includes only the very southern portions of the Ethiopian zoogeographic region. Cape horseshoe bats have a very small distribution and are an endemic species of the Cape Province of Southern Africa. They may also appear in coastal areas of Zimbabwe and Mozambique. They are uncommon on the eastern shores of South Africa. (Brown and Bernard, 1994; Grzimek's Animal Life Encyclopedia, 2005; Wilson and Reeder, 2005)
Habitat
Cape horseshoe bats can be found in tropical coastal habitats of South Africa with underground caves or abandoned mines for roosting. (Grzimek's Animal Life Encyclopedia, 2005; McDonald, Rautenbach, and Nel, 1990; Taylor, 1999)
These animals are found in the following types of habitat:
tropical
; terrestrial
.
Aquatic Biomes:
coastal
.
Other:
caves.
Physical Description
(0.58 to 0.99 oz)
(1.26 to 1.46 in)
(18.5 to 20.47 in)
Cape horseshoe bats are small to medium size bats. Their head and body are typically 23 to 24 mm; their tail is 9 to 13 mm in length, and their forearms are 48 to 52 mm. They have a wingspan of 47 to 52 cm. There is no recorded weight for R. capensis but most other species of Rhinolophus weigh 16.5 to 28 g. (Grzimek's Animal Life Encyclopedia, 2005; Skinner and Smithers, 1990)
Their coloration is a dark brown with the bases of their hair typically being slightly lighter in color. Their undersides have a light gray appearance and their wings are a dark brown color. (Taylor, 1999)
Cape horseshoe bats, like other horseshoe bat species, have unique nose leaf structures used in echolocation. Their common name is derived from these horseshoe shaped nose leaf structures. Their nose leaves help in echolocation and also shield the ears from the direct impulses coming back to them from an object in front of them. Their ears are very large and they have short legs that will not support movement on the ground. (McDonald, 2001; Nowak, 1999; Taylor, 1999)
Some key physical features:
endothermic
; heterothermic
; bilateral symmetry
.
Sexual dimorphism:
sexes alike.
Reproduction
Cape horseshoe bats mate once every year.
Mating occurs in August and September.
Rhinolophus capensis are one of the many bat species that use delayed fertilization. Sperm storage in R. capensis is in the male of the species. Typically, spermatogenesis occurs during the spring and early fall months, which in South Africa is between October and May. Sperm are released into the cauda epididymis in April and May. Sperm are then stored in the cauda epididymis during the winter months. During April and May females are in oestrus. Oestrus is the point in the menstrual cycle of female mammals when they typically would be ovulating and when males would copulate with them. In R. capensis, however, copulation and ovulation are put off until August and September (the end of winter hibernation in South Africa). Males mate with as many females as they can in their winter roosts. (Bernard, 1985; Bernard, 1988)
Mating systems:
polygynous
.
Gestation is about 4 months long at which point a single young is born. Young R. capensis will stay with their mother for about 6 to 8 weeks. At this point they are weaned and they will be left to fend for themselves. Young often stay at the breeding site for quite a while after they are left by their mothers. (Bernard, 1985; Bernard, 1988; Grzimek's Animal Life Encyclopedia, 2005)
Key reproductive features:
iteroparous
; seasonal breeding
; gonochoric/gonochoristic/dioecious (sexes separate); sexual
; induced ovulation
; viviparous
; delayed fertilization
.
Cape horseshoe bat females care for their young after birth, males do not help care for young. Females nurse and protect their young until they are weaned. (Grzimek's Animal Life Encyclopedia, 2005)
Parental investment:
altricial
; pre-fertilization (provisioning, protecting: female); pre-hatching/birth (provisioning: female); pre-weaning/fledging (provisioning: female, protecting: female).
Lifespan/Longevity
There is no good documentation on the life expectancy of R. capensis. Longevity in other Rhinolophus species is generally 4 to 7 years. (Taylor, 1999)
Behavior
Cape horseshoe bats are mainly nocturnal, coming out of underground caves in the evening to feed and returning to roost before sunrise. They have been known to migrate short distances to hibernation caves (hibernacula). Population densities of R. capensis were highest during winter hibernation. Cape horseshoe bats have been documented migrating up to 10 km to hibernacula (6.2 mi). (Grzimek's Animal Life Encyclopedia, 2005; McDonald, Rautenbach, and Nel, 1990; Taylor, 1999)
Cape horseshoe bats are gregarious, colonial roosters, with numbers in the thousands at certain roost sites. They roost singly and in small or large, loose groups of individuals, sometimes they roost in clusters. They tend to roost in cavities in the ceiling or against walls where they can hang freely. They enfold their bodies with their wings to expose the most naked skin. This is thought to allow their body temperatures to drop low enough to induce torpor. (McDonald, Rautenbach, and Nel, 1990)
Cape horseshoe bats are gregarious which means they enjoy the company of others and are highly social animals. In these caves, you may find large numbers of R. capensis. When roosting they roost singly and in small or large loose groups of individuals, however, they will often roosts in clusters. They tend to roost in cavities in the ceiling or against walls or ceilings of caves where they can freely hang without out any hindrances (McDonald, Rautenbach, and Nel, 1990; Taylor, 1999)
Home Range
Home ranges in Cape horseshoe bats have not been reported. (Grzimek's Animal Life Encyclopedia, 2005)
Communication and Perception
Cape horseshoe bats are nocturnal and roost in dark caves. They use echolocation to navigate and locate prey. They may also use some social vocalizations, although this is not well documented. Like most mammals, they use chemical cues to communicate reproductive state and as a way of recognizing individuals, such as mothers recognizing their young. (Grzimek's Animal Life Encyclopedia, 2005)
Other communication keywords:
scent marks
; vibrations
.
Perception channels:
visual
; tactile
; acoustic
; ultrasound
; echolocation
; chemical
.
Food Habits
Cape horseshoe bats are insectivores with a high percentage of their diet consisting of beetles. They hunt at night and catch insects in mid flight using their uropatagium to catch prey items. Cape horseshoe bats have short, broad wings that give them the ability to maneuver through dense foliage in flight. They use high echolocation frequencies and fly slowly over dense vegetation to pick off insect prey. Cape horseshoe bats will glean prey and may also hunt from perches. (Grzimek's Animal Life Encyclopedia, 2005; McDonald, 2001; Skinner and Smithers, 1990)
Primary Diet:
carnivore
(insectivore
).
Animal Foods:
insects.
Predation
Predators of Rhinolophus capensis have not been documented. Because they are nocturnal and fly, their most likely predators will be nocturnal raptors, such as owls. Cave dwelling carnivores could also prey on R. capensis when roosting.
Ecosystem Roles
Cape horseshoe bats, like most insectivorous bat species, exert strong influence on insect populations. They are also prey for nocturnal raptors and some other predators. (Grzimek's Animal Life Encyclopedia, 2005)
Key ways these animals impact their ecosystem:
keystone species
.
Economic Importance for Humans: Negative
Although there is no documented negative effect on humans, R. capensis living near urban areas are probably seen as nuisances if they enter human structures. Like other mammal species, Cape horseshoe bats can carry and transmit diseases that affect humans, such as rabies.
Ways that these animals might be a problem for humans:
injures humans (carries human disease).
Economic Importance for Humans: Positive
Cape horseshoe bats are efficient at reducing insect populations that may be pests to humans. (Grzimek's Animal Life Encyclopedia, 2005)
Ways that people benefit from these animals:
controls pest population.
Conservation Status
IUCN Red List: [link]:
Near Threatened.
US Federal List: [link]:
No special status.
CITES: [link]:
No special status.
State of Michigan List: [link]:
No special status.
Cape horseshoe bats are considered vulnerable by the IUCN because of their limited distribution and specialized roosting requirements. (Grzimek's Animal Life Encyclopedia, 2005)
Other Comments
The type locality of R. capensis is the Cape of Good Hope in the Province of South Africa. It was discovered in 1823. It has one synonym: R. auritus. (Wilson and Reeder, 2005)
For More Information
Find Rhinolophus capensis information at
Contributors
Matthew Ross (author), University of Wisconsin Stevens Point. Chris Yahnke (editor, instructor), University of Wisconsin Stevens Point.

