Brachystegia is a genus of tree of the sub-family Caesalpinioideae that is native to tropical Africa.
Parahippus leonensis is an extinct proto-horse of the family Equidae that was endemic to North America during the Miocene from 23.030—16.3 Ma living for approximately 6.73 million years.
Malapterurus leonensis is a species of electric catfish endemic to Sierra Leone, where it is found in the coastal rivers. This species grows to a length of 15.5 centimetres (6.1 in) SL.
Enteromius leonensis is a species of ray-finned fish in the genus Enteromius which is found from Senegal to Sudan.
The West African pygmy herring is a very small fish, reaching a maximum length of 3 centimetres (1.2 in) SL, is a member of the herring family Clupeidae, and belongs to a radiation of the subfamily Pellonulinae in the freshwater systems of western and central Africa that includes such species as the Microthrissa royauxi of the Congo River basin and Limnothrissa miodon of Lake Tanganyika. It is the only species of its genus.
Copelatus leonensis is a species of diving beetle. It is part of the genus Copelatus of the subfamily Copelatinae and the family Dytiscidae. It was described by Legros in 1954.
Nebria leonensis is a species of ground beetle in the Nebriinae subfamily that is endemic to Spain.
Sophronica is a genus of longhorn beetles of the subfamily Lamiinae, containing the following species:
Astathes leonensis is a species of beetle in the family Cerambycidae. It was described by Breuning in 1956. It is known from Sierra Leone.
Corus leonensis is a species of beetle in the family Cerambycidae. It was described by Breuning in 1935.
Sophronica bimaculipennis is a species of beetle in the family Cerambycidae. It was described by Breuning in 1955, originally under the genus Sophronisca. It is known from Ghana, the Ivory Coast, and Guinea. It contains the varietas Sophronica bimaculipennis var. besnardi.
Sophronica rufobasiantennalis is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1948. It contains the varietas Sophronica rufobasiantennalis var. ovalis.
Sophronica rufulescens is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1940. It feeds on the Monterey Pine.
Sophronica subdivisa is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1940.
Sophronica angusticollis is a species of beetle in the family Cerambycidae. It was described by Per Olof Christopher Aurivillius in 1928. It is known from Somalia, Ethiopia, Tanzania, and Kenya.
Sophronica grisea is a species of beetle in the family Cerambycidae. It was described by Per Olof Christopher Aurivillius in 1908.
Sophronica amplipennis is a species of beetle in the family Cerambycidae. It was described by Pascoe in 1888.
Niphotragulus leonensis is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1970.
Planodema leonensis is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1936.
Chariesthes leonensis is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1939. It is known from Liberia, Senegal, the Ivory Coast, Guinea, and Sierra Leone.
