10.5281/zenodo.5806693
https://zenodo.org/records/5806693
oai:zenodo.org:5806693
Long, Douglas J.
Douglas J.
Long
0000-0002-6816-8040
Museum of Riverside, 3580 Mission Inn Ave., Riverside, CA 92501, USA
Ebert, David A.
David A.
Ebert
0000-0003-4604-8192
Pacific Shark Research Center, Moss Landing Marine Laboratories, 8272 Moss Landing Rd., Moss Landing, CA 95039, USA
Tavera, Jose
Jose
Tavera
Departamento de Biología, Universidad del Valle, Cali, Colombia
Acero P., Arturo
Arturo
Acero P.
Instituto de Investigaciones en Ciencias del Mar (Cecimar), Universidad Nacional de Colombia sede Caribe, Santa Marta, Colombia
Robertson, D.R.
D.R.
Robertson
Smithsonian Tropical Research Institute, Balboa, Panamá
Squatina mapama n. sp., a new cryptic species of angel shark (Elasmobranchii: Squatinidae) from the southwestern Caribbean Sea.
Zenodo
2021
ichthyology
fishes
Atlantic Ocean
phylogenetics
DNA barcodes
Taxonomy
2021-12-29
10.5281/zenodo.5806692
Creative Commons Attribution 4.0 International
Integrating both morphological and genetic data, we describe Squatina mapama, a new species of the angel shark genus Squatina, found on the upper continental slope off the Caribbean coast of Panamá. Distinguishing characters of S. mapama include a wider pectoral and pelvic span; a shorter head length; a narrower mouth; short fringed nasal flaps and barbels; a few large denticles on top of the head; a single dorsal midline row of slightly enlarged denticles from the level of the posterior insertion of the pelvic fin to the first dorsal fin and continuing past the first dorsal fin to the second dorsal-fin origin; and the presence of smaller scattered spots in males, which, in combination, allow separation of this new species from the closely related and sympatric species Squatina david. The new species can be distinguished from all other currently recognized Squatina species by meristic and morphometric measures, as well as by sequence differences in the mtDNA COI marker. Phylogenetic analysis shows Squatina mapama n. sp. to be a basal member of a small clade of western Atlantic Squatina species that includes Squatina occulta, Squatina guggenheim, and S. david, which likely evolved in the late Oligocene or Miocene period. We also report a western range extension of S. david from Colombia to the western Caribbean coast of Panamá.