The stony coral Agaricia tenuifolia Dana, 1848 as a new gall crab host (Decapoda: Cryptochiridae)

Infrequently studied coral species are seldom mentioned as host organisms of associated fauna. Here we report on the stony coral Agaricia tenuifolia Dana, 1848 hosting a gall crab (Cryptochiridae). This coral-dwelling crab was observed at the southern coast of Bonaire in the Dutch Caribbean. Based on the shape of the dwelling, and the host specificity of cryptochirids, the crab is tentatively identified as Opecarcinus hypostegus (Shaw & Hopkins, 1977).