Kroesche, Rachel; Rouse, Greg W. (2025). Four New Species of Hesionidae (Annelida, Polychaeta, Phyllodocida) from Eastern Pacific Chemosynthetic Habitats and Reinstatement of Vrijenhoekia. Diversity. 17(2: 121): 1-30.

505525

10.3390/d17020121 [view]

Kroesche, Rachel; Rouse, Greg W.

2025

17(2: 121): 1-30

Publication

https://www.mdpi.com/1424-2818/17/2/121

Annelidabase

Hesionid polychaetes are well known at hydrothermal vents, methane seeps, and unusual habitats such as whale falls. In 1985, Sirsoe grasslei was the first hesionid to be named from a hydrothermal vent. Vrijenhoekia was erected in 2008 for a closely related species from a whale fall. Further species of Sirsoe and Vrijenhoekia were described in the following decade and the genera were recovered as reciprocally monophyletic with DNA data. However, Sirsoe was made a senior synonym of Vrijenhoekia when 10 further new species from the clade were named from off the coast of Brazil. To further evaluate the status of Sirsoe and Vrijenhoekia, we present the first DNA data for the type species of Sirsoe, S. grasslei. Our results allow the reinstatement of Vrijenhoekia and emended diagnoses for Sirsoe and Vrijenhoekia. Four new species, three in Sirsoe and one in Vrijenhoekia, are also described.

East Pacific

Molecular systematics, Molecular biology
Systematics, Taxonomy

Annelida
Polychaeta

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