Russet Wrinkle-lipped Bat

Mops russatus is a small free-tailed bat endemic to the forested regions of West Africa, notable for its russet-brown fur and characteristic wrinkled lips typical of molossid bats. It is a poorly studied species classified as Data Deficient due to limited records and taxonomic uncertainty. Its known range centers on the Upper Guinea forest ecosystem of Ivory Coast and Ghana.

West Africa, primarily Ivory Coast, Ghana, and surrounding forested regions of the Upper Guinea forest block

Known distribution is restricted to parts of West Africa, with confirmed records from Ivory Coast and Ghana within the Upper Guinea forest region; the full extent of its range remains uncertain due to sparse survey data.

Altitude and depth

Lowland habitats, typically below 500 meters elevation

Seasonal movements

No documented seasonal migration; likely exhibits some behavioral changes correlating with wet and dry season insect availability, though this is not well studied.

Primarily found in lowland tropical rainforest and forest-edge habitats, often roosting in tree hollows, caves, or crevices in rocky outcrops. May also utilize secondary forest and forest fragments near human settlements.

Adaptations to its environment

Possesses long narrow wings typical of molossids, enabling fast, high-altitude flight for aerial insectivory. Wrinkled lips and specialized dentition aid in capturing and processing flying insects; echolocation calls are adapted for open-air hunting above the forest canopy.

Listed as Data Deficient (DD) by the IUCN due to insufficient information on population size, distribution, and ecological requirements to assess extinction risk accurately.

Estimated population

Unknown; no reliable population estimates exist due to the species' rarity in survey records and taxonomic confusion with related Mops species.

Habitat loss from deforestation, logging, and agricultural expansion in the Upper Guinea forest region poses a likely threat, though specific impacts on this species are not quantified.

No species-specific conservation programs exist; the species may benefit indirectly from protected areas within its range, such as Taï National Park in Ivory Coast.

Recommended actions

Increased field surveys and taxonomic clarification are urgently needed, along with habitat protection in the Upper Guinea forest hotspot and genetic studies to resolve species boundaries within the genus Mops.

Fur is reddish-brown to russet in color, giving the species its common name, with paler underparts. Like other molossids, it has a robust body, short broad wings, and a tail that extends beyond the interfemoral membrane.

Size

Forearm length approximately 35-40 mm; total body length estimated at 8-10 cm

Weight

Estimated 8-15 grams, consistent with similarly sized Mops species

Distinctive features

Distinguished from related Mops species primarily by its distinctive russet coloration and specific cranial and dental measurements noted in original taxonomic descriptions.

Likely colonial, roosting in small to moderate-sized groups in tree hollows or rock crevices, consistent with social behavior observed in related molossid bats.

When it is active

Nocturnal, emerging at dusk to forage for flying insects

Diet

Insectivorous, feeding on a variety of flying insects such as moths, beetles, and other nocturnal insects typical of forest and forest-edge environments

How it feeds and hunts

Uses echolocation to detect and capture flying insects in open airspace above or near the forest canopy, employing fast, agile flight typical of free-tailed bats.

Communication

Likely uses echolocation calls for navigation and prey detection, along with social vocalizations for roost-mate communication, though acoustic studies specific to this species are limited.

Interactions with other species

May co-roost or compete for insect prey with other sympatric molossid and insectivorous bat species in West African forests; potential predators include owls and small carnivores.

Role in its ecosystem

Plays a role as an insectivorous predator, contributing to natural pest control within forest ecosystems by consuming large quantities of nocturnal flying insects.

Reproductive biology is poorly documented; likely follows a pattern similar to related molossids with possible seasonal breeding tied to insect abundance and a single pup per litter.

Raising the young

Presumed maternal care typical of bats, with females nursing a single pup until it is capable of flight and independent foraging, though specific data for this species is lacking.

Maturity and lifespan

Unknown specifically for this species; related molossid bats typically reach sexual maturity within the first year and may live 5-10 years in the wild.

Classification

Class Mammalia > Order Chiroptera > Family Molossidae > Genus Mops > Species Mops russatus

Scientific synonyms

Xiphonycteris russata (Allen, 1917)

Recent studies

Limited recent research exists; most knowledge stems from historical museum specimens and taxonomic revisions of the genus Mops in West Africa.

Compared with similar species

Similar in general appearance to other West African Mops species such as Mops thersites and Mops nanulus, but distinguished by its russet fur coloration and specific morphometric traits used in original species descriptions.

This bat's reddish fur color, unusual among many drab-colored molossids, likely inspired both its common and scientific names ('russatus' meaning reddish in Latin). It remains one of the least-studied bat species in West Africa, known mainly from a handful of museum specimens.

Where and how to see it

Best observed at dusk near forest edges or roosting sites in protected areas like Taï National Park in Ivory Coast; specialized bat detectors are recommended to identify its echolocation calls given its cryptic nature.

Risks to humans

No notable risk to humans