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Search for Lost Species > Most Wanted > Sierra Leone Crab

Sierra Leone Crab watercolor
data deficient

Sierra Leone Crab

SCIENTIFIC NAME: AFRITHELPHUSA LEONENSIS
LAST SEEN: 1955 IN WEST AFRICA
YEARS LOST: 63
Data Deficient

 

The Sierra Leone Crab is restricted to freshwater habitats in the Upper Guinea rainforest zone and known only from three individuals collected in 1955. Relatives of these crabs were recently rediscovered and have striking orange and purple coloration, an unusual inflated carapace and an unusual ecology—they climb trees. A search for this crab could also include a search for two other lost species in the Upper Guinea rainforest zone, Afzeli’s Crab (Afrithelphusa azfelli), which is known from two individuals collected before 1800, and Gerhilda’s Crab (Afrithelphusa gerhildae). All three species are likely lost because they live in obscure, out-of-the-way niches such as trees, caves, mountain streams and cracks in rocks.

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