On the occurrence of the deep-sea barnacle Tetrachaelasma southwardi Newman & Ross, 1971 (Cirripedia, Balanomorpha, Bathylasmatidae) in the Mar del Plata Submarine Canyon, Argentina: supplementary description and taxonomic remarks on the genus


	Tetrachaelasma southwardi Newman & Ross, 1971. Labrum SEM photographs (palps removed). Specimen (MACN-In 44478b): A. General aspect from above; B, C. Details of the crest; serrate setae in green, teeth in red. Specimen (MACN-In 44479h): D. General aspect from above; E–H. Details of the crest. Scale bars: 300 µm (A, D); 10 µm (B, C, E–H).

Part of: Chiesa IL, Pereira E, Roccatagliata D (2024) On the occurrence of the deep-sea barnacle Tetrachaelasma southwardi Newman & Ross, 1971 (Cirripedia, Balanomorpha, Bathylasmatidae) in the Mar del Plata Submarine Canyon, Argentina: supplementary description and taxonomic remarks on the genus. Zoosystematics and Evolution 100(2): 603-623. https://doi.org/10.3897/zse.100.118912