@article{Atherton_Jondelius_2018, title={Microstomum (Platyhelminthes, Macrostomorpha, Microstomidae) from the Swedish west coast: two new species and a population description}, url={https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/526}, DOI={10.5852/ejt.2018.398}, abstractNote={Two new species of marine Platyhelminthes, <em>Microstomum laurae</em> sp. nov. and <em>Microstomum edmondi</em> sp. nov. (Macrostomida: Microstomidae) are described from the west coast of Sweden. <em>Microstomum laurae</em> sp. nov. is distinguished by the following combination of characters: rounded anterior and posterior ends; presence of approximately 20 adhesive papillae on the posterior rim; paired lateral red eyespots located level with the brain; preoral gut extending anterior to brain and very small sensory pits. <em>Microstomum edmondi</em> sp. nov. is a protandrous hermaphrodite with a single ovary, single testis and male copulatory organ with stylet. It is characterized by a conical pointed anterior end, a blunt posterior end with numerous adhesive papillae along the rim, and large ciliary pits. The stylet is shaped as a narrow funnel with a short, arched tip. In addition, the first records of fully mature specimens of <em>Microstomum rubromaculatum</em> von Graff, 1882 from Fiskebäckskil and a phylogenetic analysis of <em>Microstomum</em> Schmidt, 1848 based on the mitochondrial cytochrome oxidase I (COI) gene are presented.}, number={398}, journal={European Journal of Taxonomy}, author={Atherton, Sarah and Jondelius, Ulf}, year={2018}, month={Jan.} }