Abstract
The genus Akrostomum was erected by Grube in 1840 for a single species A. stannii which remained a nomen dubium until redescribed by Bürger in 1895 as Amphiporus stanniusi. Bürger (1909) described Drepanophorus valdiviae which shared many characters with A. stannii. Stiasny-Wijnhoff (1923) noted that these two forms belonged neither to Amphiporus nor Drepanophorus and united them in a new genus Valdivianemertes but did not mention the earlier name Akrostomum nor a family affiliation. Several major characters are examined. The nomenclatural status is analyzed, with retention of the junior synonym Valdivianemertes, and the type species is fixed as V. stannii by subsequent designation. Family affiliation is discussed, and the genus is transferred to the Cratenemertidae.
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Crandall, F.B. (1993). The genus Valdivianemertes Stiasny-Wijnhoff 1923 (Nemertea, Enopla, Hoplonemertea): nomenclatural status and proper systematic position. In: Gibson, R., Moore, J., Sundberg, P. (eds) Advances in Nemertean Biology. Developments in Hydrobiology, vol 89. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2052-4_13
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