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Abstract
Macquaridrilus mcmurtrieae n. sp. is described from Campbell Island. This resembles the only other species in the genus, Macquaridrilus bennettae Jamieson, 1968, in most aspects, but shows significant differences in the anatomy of its genitalia. In particular, the spermathecal pores are dorsal rather than lateral, the spermathecae lack diverticulae, the ejaculatory duct is more stout and muscular, the vas deferens is shorter relative to other organs and the anterior prostate is compact rather than elongate. The presence of a cuticular sperm canal appears to be an apomorphy for the genus. The new species was collected from streams and tarns across the island.
http://zoobank.org/urn:lsid:zoobank.org:pub:652AF61D-CFB2-4D07-94C8-59E6FB549D5F
http://zoobank.org/urn:lsid:zoobank.org:act:984F2456-768D-48A1-87AD-4453768BAB8A
Acknowledgements
Thanks to Shelley McMurtrie and Amber Sinton at EOS Ecology for making the Campbell Island worms available to AMP and for providing funds for their identification. Thanks also to Professor Christer Erséus of the University of Gothenburg in Sweden for attempting to obtain molecular genetic information that would have helped understand the phylogenetic affinities of this species. The Campbell Island Bicentennial Expedition was made possible by the 50° South Trust (www.50south.org.nz), established to further research and education on New Zealand's subantarctic islands. Processing of the benthic aquatic invertebrate samples was supported by EOS Ecology and a Terrestrial and Freshwater Biodiversity Information System grant (TFBIS 278).