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

Autor:	Matthew D. Hooge, Seth Tyler
Rok vydání:	2015
Předmět:	biology Phylogenetic tree Haplogonaria Acoelomorpha Anatomy Body size biology.organism_classification Acoela Xenacoelomorpha Seminal vesicle medicine.anatomical_structure medicine Animal Science and Zoology Platyhelminths Ecology Evolution Behavior and Systematics
Zdroj:	Zootaxa. 4013:111
ISSN:	1175-5334 1175-5326
DOI:	10.11646/zootaxa.4013.1.8
Popis:	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.
Databáze:	OpenAIRE
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