Markhaseva, E.L. (2015). Vensiasa incerta (Copepoda, Calanoida): a new genus and species from deep Atlantic waters. Trudy Zoologicheskogo Instituta. 319(2):182-195.
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Markhaseva, E.L.
2015
Vensiasa incerta (Copepoda, Calanoida): a new genus and species from deep Atlantic waters.
Trudy Zoologicheskogo Instituta
319(2):182-195.
Publication
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A new genus of a benthopelagic copepod is described from females and male taken from the abyss of the South Atlantic close to the sea bed. Vensiasa incerta gen. et sp. n. shares the presence of sensory setae on maxilla and maxilliped with all other “Bradfordian” members of the Clausocalanoidea. This new genus with a 1, 2, 3 setal pattern on the praecoxal endites of the maxilliped is attributed to the Diaixidae. Vensiasa gen. n. is distinct from all other diaixid genera in the following characters: maxillulary endopod with 5 setae; maxillary endopod setal formula as 6w+2br, worm-like setae differ in morphology between each other, same for brush-like setae; male’s P5 protopods asymmetrical, and left leg endopod is longer than the 3-segmented exopod. A differential diagnosis for the genus is given based on both sexes. Vensiasa gen. n. is now found from equator up to 36°S in the eastern and western South Atlantic.
Key words: Copepoda, new taxa, Vensiasa gen. n., calanoids, Atlantic, deep water, benthopelagic
