Ostrea equestris Say, 1834

Passos, Flávio Dias, Batistão, Alan Rodrigo & Lima, Luan Lucas Cardoso, 2024, Checklist of marine Bivalvia (Mollusca) from Brazil, with descriptive analyses of their bathymetric and geographical distribution, Zootaxa 5488 (1), pp. 1-94 : 34

165. Ostrea equestris Say, 1834

Bathymetric distribution: 0–100 m —SW.

Geographical distribution: USA (Virginia) to Argentina (Golfo San Matias)—WGD.

Remarks: Ostrea stentina Payraudeau, 1826 is recorded from Brazil (e.g., Ranson 1967; CTFB 2024). A recent revision using molecular markers ( Hu et al. 2019) concluded that O. stentina is a species complex, consisting of three species, with O. equestris being restricted to the Americas and Asia, O. stentina from the eastern Atlantic, and O. neostentina L.-S. Hu, H.-Y. Wang, Z. Zhang, C. Li & X.-M. Guo, 2019 from the Mediterranean Sea and Asia.

References: Ranson (1967), Rios (1994, 2009), Hu et al. (2019)