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Two new acoels (Acoelomorpha) of the genus Haplogonaria from the northwest Atlantic

descriptionPublicationkeyboard_double_arrow_right Article 07 Sep 2015Publisher:Magnolia PressJournal:Zootaxa, volume 4,013 (issn: 1175-5326, eissn: 1175-5334,

Authors: Hooge, Matthew D.; Tyler, Seth;

doi: 10.11646/zootaxa.4013.1.8

pmid: 26623886

Two new acoels (Acoelomorpha) of the genus Haplogonaria from the northwest Atlantic

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Abstract

Two previously unknown species of Haplogonaria (Acoela), H. schillingi sp. nov. and H. baki sp. nov., are described from the coastline of Maine, USA. The two species are morphologically similar to each other but H. schillingi can be distinguished from H. baki by its red pigmentation, its possession of a large genital atrium that branches posteriorly to the seminal vesicle and anteriorly to the vagina, a seminal vesicle that is more ellipsoid-shaped than spherical, and a well-defined wall in the seminal bursa. We provide a description of the new species using live observation, light microscopy of serial sagittal sections, and confocal microscopy imaging of F-actin. We compare the morphology of the new species with other members of the genus and discuss the phylogenetic position of H. schillingi in light of conflicting morphological and molecular data.

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University of Maine
United States

Keywords

Male, Acoelomorpha, Haploposthiidae, Animal Structures, Biodiversity, Organ Size, Xenacoelomorpha, Platyhelminths, Animalia, Animals, Body Size, Maine, Taxonomy, Acoela

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13 Research products, page 1 of 2

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Two new acoels (Acoelomorpha) of the genus Haplogonaria from the northwest Atlantic
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