AI Article Synopsis
- A new species of small xanthoid crab has been identified in the northern Gulf of Mexico, classified as Guinope tiara n. gen., n. sp., which cannot be assigned to any currently known crab genera.
- The classification is supported by genetic analysis that was previously misattributed to a different species.
- Specimens previously thought to be Garthiope barbadensis are actually part of this new genus, but further genetic testing is needed to determine if they are variants or a second species of Guinope.
Article Abstract
Speciose populations of small xanthoid crabs on offshore banks and reefs of the northern Gulf of Mexico include a new species that is not assignable to presently named genera. Morphological diagnoses of the new genus and species are underpinned by previously published gene sequence analyses, originally misattributed to another species but now known to apply to this taxon. Herein named Guinope tiara n. gen., n. sp., the species shows molecular phylogenetic affinities with the family Linnaeoxanthidae Števčić, 2005, an ally of panopeid and pseudorhombilid crabs. Specimens from Occulina banks off the Florida Atlantic coast, previously regarded to represent Garthiope barbadensis (Rathbun, 1921), are not that species but instead morphologically assignable to Guinope n. gen. Whether they represent variants of Guinope tiara n. gen, n. sp. or a second species of the genus awaits the collection of fresh materials for DNA analyses.
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| http://dx.doi.org/10.11646/zootaxa.4731.3.8 | DOI Listing |
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