Species delimitation within the genus Porcellana (Anomura, Galatheoidea, Porcellanidae) in the East Atlantic and systematic implications

What is it about?

The porcelain crab Porcellana africana, initially considered a subspecies, has been identified as an invasive species in South Africa, challenging previous identifications and distribution records. Our study delves into the East Atlantic to untangle the mystery of Porcellana species, crucial for conservation decisions. Molecular analyses confirm P. africana as a distinct species, expanding its known range to include the Canary Islands. The split between P. platycheles and P. africana dates back to the Neogene, influenced by significant climatic shifts. While these crabs look alike, the key to telling them apart lies in the shape of the third thoracic sternite. Our findings shed light on their history and offer insights for effective conservation and management strategies.

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