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Species Diversity
- Authors: Takafumi Nakano1, Hong-Yul Seo2
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Abstract
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Specimens of the genus Orobdella Oka, 1895 from Gageodo Island, Korea, are identified as Orobdella tsushimensis Nakano, 2011 based on the following characteristics: IV uniannulate; 1/2+5 annuli between the gonopores; a bottle-shaped gastroporal duct; and epididymides in XVII–XIX. The diagnosis of O. tsushimensis is amended since the Korean specimens have a reddish dorsal surface and ovate atrial cornua. Phylogenetic analyses using mitochondrial COI, tRNACys, tRNAMet, 12S rRNA, tRNAVal, and 16S rRNA markers show that the specimen from Gageodo Island and those identified as O. tsushimensis from Tsushima Island, Japan, form a monophyletic clade, confirming the species identification of the former. This is the first record of the genus Orobdella, and of the monotypic family Orobdellidae, from Korea.
,Specimens of the genus Orobdella Oka, 1895 from Gageodo Island, Korea, are identified as Orobdella tsushimensis Nakano, 2011 based on the following characteristics: IV uniannulate; 1/2+5 annuli between the gonopores; a bottle-shaped gastroporal duct; and epididymides in XVII-XIX. The diagnosis of O. tsushimensis is amended since the Korean specimens have a reddish dorsal surface and ovate atrial cornua. Phylogenetic analyses using mitochondrial COI, tRNACys, tRNAMet, 12S rRNA, tRNAVal, and 16S rRNA markers show that the specimen from Gageodo Island and those identified as O. tsushi-mensis from Tsushima Island, Japan, form a monophyletic clade, confirming the species identification of the former. This is the first record of the genus Orobdella, and of the monotypic family Orobdellidae, from Korea.
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