Tabachnick, K.R.; Menshenina, L.; Lopes, D.A.; Hajdu, E. (2009). Two new Hyalonema species (Hyalonematidae: Amphidiscosida) from eastern and south-eastern Brazil, and further Hexactinellida (Porifera) collected from seamounts off south-eastern Brazil by the RV ‘Marion Dufresne' MD55 expedition. Journal of the Marine Biological Association of the United Kingdom. 89 (6): 1243-1259.

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Tabachnick, K.R.; Menshenina, L.; Lopes, D.A.; Hajdu, E.

2009

89 (6): 1243-1259

Publication

Available for editors   [request]

Descriptions of hexactinellid sponges collected by the RV ‘Marion Dufresne’ MD55 expedition on the Vitoria–Trindade seamounts chain (off Esp1rito Santo State, south-eastern Brazil) in 1987 and stored in the MNHN (Museum National d’Histoire Naturelle in Paris) are presented. Hyalonema (Cyliconema) conqueror sp. nov. (the first finding of this subgenus in the Atlantic Ocean) and H. (Prionema) dufresnei sp. nov. (the second record of this subgenus for the Atlantic Ocean) are described as new species. The holotype of H. (C.) conqueror sp. nov. was collected with a ROV at Campos Basin (off Rio de Janeiro State, south-eastern Brazil), while the paratypes originated from Vitoria–Trindade seamounts chain and off Bah1a State (eastern Brazil). Other hexactinellids reported here, Farrea sp., Sarostegia aff. oculata, Aphrocallistes aff. beatrix, Dactylocalyx aff. subglobosus and Euplectella suberea were known before to be widely distributed in the Atlantic Ocean. The total number of hexactinellid sponges known from Brazil has risen to 15 and from the south-western Atlantic to 23.

South Atlantic

Systematics, Taxonomy

Porifera

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