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Issue: Vol. 11: 5 Nov. 2001
Type: Article
Published: 2001-11-05
DOI: 10.11646/zootaxa.11.1.1
Page range: 1–8
Abstract views: 85
PDF downloaded: 4

A new species of Gieysztoria (Platyhelminthes; Rhabdocoela; Dalyelliidae) from a freshwater lake in Queensland, Australia

Queensland Museum, Worms Section, South Brisbane, Queensland 4101, Australia
Queensland Museum, Worms Section, South Brisbane, Queensland 4101, Australia
Platyhelminthes Gieysztoria copulatory organ taxonomy

Abstract

A new species of Dalyelliidae, Gieysztoria queenslandica, is described from a freshwater lake in Brisbane, Queensland, Australia. Gieysztoria queenslandica n. sp. is a member of the Aequales group of Gieysztoria and differs from its congeners by possession of an S-shaped ovary, a Y-shaped oviduct leading to a separate receptaculum seminis, and the shape and size of the male copulatory organ. The sclerotic male organ of G. queenslandica is characterized by 27-32 broad, dagger-like spines arising from a hollow crescent-shaped girdle. The new species is seasonally abundant (April- July) in an artificial lake present on the St. Lucia campus of the University of Queensland in Brisbane, Australia.

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