Revision of Trigonostomum Schmidt, 1852 (Platyhelminthes, Typhloplanoida, Trigonostomidae) with the description of seven new species

• Main Authors: Willems, W.R., Artois, T.J., Vermin, W.A., Schockaert, E.R.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2004
• Subjects: Identification keys; Phylogenetics; Taxonomy; Trigonostomidae; Antarctic; Kerguelen; Antarc*
• Online Access: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=63431

A morphological and taxonomic account of the genus Trigonostomum is provided. All known species are discussed and briefly re-described where necessary. Seven new species are described: T. franki from Curaçao, Florida (USA), the East African Coast and New Caledonia, T. nataschae from the French sub-Antarctic island Kerguelen, T. spinigerum from New Caledonia and T. watsoni from the Australian East Coast and New Caledonia. T. tori and T. galapagoensis , both formerly enclosed in T. setigerum , are considered new species, while T. australis also belongs to the same species group. Proxenetes denhartogi is transferred to Trigonostomum . Based on a comparison of old and new material, T. marki is synonymized with T. penicillatum , while T. prytherchi and T. divae are regarded as junior synonyms of T. lilliei; T. intermedium and T. quadrifolium are considered synonyms of T. coronatum . Three species are considered species inquirendae: T. brunchorsti, T. piriforme and Marinellia lingulifera . Similarities and differences of the 17 valid species are discussed and summarized in an identification key.