Skip to main content
    • Aa
    • Aa

A new species of Allogenus (Tricladida, Maricola, Uteriporidae) from South Georgia, Sub-Antarctica

  • Odile Volonterio (a1) and Paul E. Brewin (a2) (a3)

South Georgia is a remote sub-Antarctic island, considered a marine biodiversity ‘hotspot’ in the Southern Ocean. During a survey along the north coast of South Georgia several marine planarians were found. One of the specimens was a new species of Allogenus (Uteriporidae), which is described here as Allogenus sluysi sp. nov. The new species has the characteristics of the genus and can be distinguished from the type and only known species, Allogenus kerguelensis, by its smaller size, blackish-brown pigmentation, presence of three retinal cells in each eye cup, position of its testes half-way between the ventral and dorsal body surfaces or at a slightly more ventral position, and by having an ejaculatory duct that opens centrally at the tip of the penis papilla. The presently known geographical distribution of Allogenus, the heterogeneous marine planarian species composition in South Georgia, and the distribution of these species in this region are in agreement with a previously proposed vicariance hypothesis, albeit that dispersal cannot be ruled out.

Corresponding author
Correspondence should be addressed to: O. Volonterio, Sección Zoología de Invertebrados, Facultad de Ciencias, Universidad de la República, Iguá 4225, piso 8 sur, Montevideo, Uruguay email:
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

I.W.D. Dalziel and D.H. Elliot (1971) Evolution of the Scotia Arc. Nature 233, 246252.

J. Davenport (1997) Comparisons of the biology of the intertidal subantarctic limpets Nacella concinna and Kerguelenella lateralis. Journal of Molluscan Studies 63, 3948.

O.T. Hogg , D.K.A. Barnes and H.J. Griffiths (2011) Highly diverse, poorly studied and uniquely threatened by climate change: an assessment of marine biodiversity on South Georgia's continental shelf. PloS One 6, e19795.

P.G. Moore , H.E. MacAlister and A.C. Taylor (1995) The environmental tolerances and behavioural ecology of the sub-Antarctic beach hopper ‘Orchestiascutigerula Dana (Crustacea: Amphipoda) from Husvik, South Georgia. Journal of Experimental Marine Biology and Ecology 189, 159182.

P.J.A. Pugh and J. Davenport (1997) Colonisation vs. disturbance: the effects of sustained ice-scouring on intertidal communities. Journal of Experimental Marine Biology and Ecology 210, 121.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 1
Total number of PDF views: 7 *
Loading metrics...

Abstract views

Total abstract views: 59 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 29th May 2017. This data will be updated every 24 hours.