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Published: 2019-07-30

Two new species of Amphiglena (Sabellidae, Annelida), with an assessment of hidden diversity in the Mediterranean

Scripps Institution of Oceanography, UC San Diego, La Jolla, CA 92093-0202, USA
Scripps Institution of Oceanography, UC San Diego, La Jolla, CA 92093-0202, USA
Annelida morphology taxonomy DNA polychaete sabellid feather-duster worm cryptic species


Amphiglena is a clade of sabellid annelids that has 12 named species from around the world. New COI and 18S sequences were combined with some available data to generate a molecular phylogeny for Amphiglena. Two new species of Amphiglena are described as a result, using an integrative approach combining molecular evidence with morphological descriptions using histology, 3D reconstructions and electron microscopy. Amphiglena seaverae n. sp is described from Florida, USA and Amphiglena joyceae n. sp. from Edithburgh, South Australia. Our analyses also reveal a previously underemphasized species complex in the Mediterranean, with up to six undescribed species. This highlights the potential diversity of these minute annelid worms yet to be named.



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