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Issue: Vol. 4179 No. 2: 31 Oct. 2016
Type: Article
Published: 2016-10-31
DOI: 10.11646/zootaxa.4179.2.2
Page range: 209–224
Abstract views: 116
PDF downloaded: 2

A new species of the genus Bothrioplana (Platyhelminthes: Bothrioplanida: Bothrioplanidae) and a new species of the genus Pentacoelum (Tricladida: Bdellouridae) from southern China

Shenzhen Key Laboratory of Marine Bioresource and Eco–environmental Science, Guangdong Engineering Research Center for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, PR China Department of Applied Biology & Chemical Technology, Hong Kong Polytechnic University, Kowloon, Hong Kong PR, China
Shenzhen Key Laboratory of Marine Bioresource and Eco–environmental Science, Guangdong Engineering Research Center for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, PR China
Shenzhen Key Laboratory of Marine Bioresource and Eco–environmental Science, Guangdong Engineering Research Center for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, PR China
Shenzhen Key Laboratory of Marine Bioresource and Eco–environmental Science, Guangdong Engineering Research Center for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, PR China
Shenzhen Key Laboratory of Marine Bioresource and Eco–environmental Science, Guangdong Engineering Research Center for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, PR China
Shenzhen Key Laboratory of Marine Bioresource and Eco–environmental Science, Guangdong Engineering Research Center for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, PR China
Platyhelminthes turbellarian Bothrioplanida Tricladida taxonomy new species 18S rDNA

Abstract

Two new species of turbellarians, Bothrioplana sinensis n. sp., and Pentacoelum sinensis n. sp., were described based on their reproductive behavior, ontogenic development, morphology in whole-mounted and sectioned specimens, and 18S rDNA phylogenetic classification. Bothrioplana sinensis n. sp. represents a newly recorded order in China and the second identified species in the genus Bothrioplana. It is characterized by a pair of spherical-shaped well-developed testes located dorsally behind the pharynx, and the common vas deference located ventrally to the gonopore. Phylogenetic analysis showed that this new species is closely related to parasitic flatworms. Pentacoelum sinensis n. sp. is characterized by two uteri instead of lateral bursae located laterally near the tail end and a lack of connection between the posterior intestinal branches. Each uterus has a ventral receptaculum seminalis (also functioning as bursa copulatrix) which has a muscular vagina externa opening obliquely to the ventral side at the tail end.

 

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