An integrated taxonomic and conservation assessment of Glauconycteris (Chiroptera, Vespertilionidae) in Cameroon, with the description of two new species from the Northwestern Congolian Lowland Forest

Abstract

The genus Glauconycteris (Vespertilionidae) comprises small, forest-dependent bats distributed across sub-Saharan Africa. Despite its distinctive morphology, the genus remains poorly represented in collections and its taxonomy unresolved. During recent field surveys in southeastern Cameroon, ten Glauconycteris specimens were collected from the Northwestern Congolian Lowland Forest, eight from Lobéké National Park (LNP) and two from the Dja Biosphere Reserve (DBR).

Morphometric and molecular analyses assigned these specimens to eight species, including representatives of three species groups (poensis, beatrix, and humeralis). One species, G. superba, is recorded for the first time from Cameroon and two are described herein as new to science, Glauconycteris baka sp. nov. and Glauconycteris lobeke sp. nov. These findings increase the total number of recognised Glauconycteris species to 15 and confirm that G. beatrix, as previously understood, represents a species complex, revealing further cryptic diversity within the genus.

By combining taxonomic, ecological, and distributional data, our results indicate that most members of the genus tolerate moderate habitat degradation and that all 11 species recorded from Cameroon occur within or adjacent to at least one protected area. This study provides the first integrated taxonomic assessment of Glauconycteris in Cameroon, refines species distributions, and contributes additional ecological data for three species (G. gleni, G. egeria, and G. curryae) currently listed as Data Deficient on the IUCN Red List.

Our findings underscore the importance of continued sampling in the Guineo-Congolian region to better inform the conservation of Africa’s forest-dependent bats.