Two new species of umagillid flatworms from the 20-rayed antarctic crinoid Promachocrinus kerguelensis

• Published in: Canadian Journal of Zoology
• Main Author: Shinn, G. L.
• Other Authors: Harbor Branch Oceanographic Institute
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing
• Subjects: Crinoidea; Turbellarians; Endosymbiosis; Flatworms; Antarctic; Antarctic Peninsula; The Antarctic; Antarc*; antarcticus
• Online Access: http://purl.flvc.org/FCLA/DT/3342223; https://doi.org/10.1139/z87-159; https://fau.digital.flvc.org/islandora/object/fau%3A6388/datastream/TN/view/Two%20new%20species%20of%20umagillid%20flatworms%20from%20the%2020-rayed%20antarctic%20crinoid%20Promachocrinus%20kerguelensis.jpg

Two new endosymbiotic turbellarians from the 20-rayed crinoid Promachocrinus kerguelensis are described from specimens collected off the western coast of the Antarctic Peninsula. Desmote antarcticus sp.n. differs from previously described members of the genus in the shape of the penis stylet, orientation of the terminal branches of the ovaries, and connections of the genital ducts to the exterior. Parafallacohospes bransfieldensis gen. et sp.n. is distinctive among known umagillids in having a pair of broad lobes projecting from each side of the body. This manuscript is the post-print of an article published by Canadian Science Publishing, an independent and not-for-profit organization. The final version is published in Canadian Journal of Zoology available at http://www.nrcresearchpress.com/journal/cjz and may be cited as: Shinn, G. L. (1987). Two new species of umagillid flatworms from the 20-rayed antarctic crinoid Promachocrinus kerguelensis1. Canadian Journal of Zoology, 65(4), 1001-1009. doi:10.1139/z87-159 Florida Atlantic University. Harbor Branch Oceanographic Institute contribution #539.