Systematic Parasitology

, Volume 88, Issue 2, pp 103–117 | Cite as

Two new species of Quasithelazia Maplestone, 1932 (Nematoda: Acuariidae) from Malaysia, with an amended diagnosis and review of the genus

  • Yasen Mutafchiev
  • Jean Mariaux
  • Boyko B. Georgiev


Quazithelazia rostrata n. sp. from Ceyx erithaca (L.) (type-host) and Alcedo euryzona Temminck (Coraciiformes, Alcedinidae) and Q. alata n. sp. from Enicurus ruficapillus Temminck (Passeriformes, Muscicapidae) are described from vicinities of Gombak Biological Station, Selangor, Malaysia; both species are parasitic under the koilin lining of the gizzard. Paratypes of Schistogendra pelargopsis Nandi, De & Majumdar, 1985, a parasite of Pelargopsis capensis (L.) (Alcedinidae) from India, are redescribed and the species is recognised as a junior synonym of the type-species of Quasithelazia, Q. tenuis Maplestone, 1932 (new synonymy), a species originally described from Halcyon smyrnensis (L.) (Alcedinidae) in India. An amended diagnosis of the genus Quasithelazia Maplestone, 1932 is proposed. Currently, this genus includes eight species occurring in the Old World, six of them parasitic in kingfishers (Alcedinidae) and two species parasitic in flycatchers (Muscicapidae). These include, inter alia, Q. halcyoni n. comb. for Viktorocara halcyoni Ryzhikov & Khokhlova, 1964 from Halcyon smyrnensis and H. pileata (Boddaert) in Vietnam and the Russian Far East, Q. microcordonis n. comb. for Rusguniella microcordonis Schmidt & Kuntz, 1971 from Halcyon coromanda major (Temminck & Schlegel) in Taiwan and Q. multipapillata n. comb. for Schistogendra multipapillata Zhang, 1993 from Tarsiger cyanurus (Pallas) (Muscicapidae) in China. Comparative morphological data for Quasithelazia spp. are presented. Schistogendra oligopapillata Zhang & An, 2002 from domestic ducks in China is considered a species incertae sedis.


Junior Synonym Buccal Cavity Excretory Pore Anterior Extremity Transverse Striation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This study was supported by Sciex-HMSch Program CRUS, Switzerland. The re-examination of the type material of Schistogendra pelargopsis was possible due to a SYNTHESYS 2 (EC FP7) visit grant FR-TAF-841 to the senior author, kindly hosted by Dr O. Bain. We are grateful to Prof. Rosli Hashim and Prof. Rosli Ramli, Institute of Biological Sciences, Faculty of Sciences, University of Malaya, Kuala Lumpur, for their kind assistance in the organisation of the field studies and for making available facilities of the Gombak Biological Station. The field trip of JM and BBG in Malaysia was in the frames of a project supported by the National Science Foundation, USA (PBI Awards No. 0818696 to Prof. Janine N. Caira and No. 0818823 to Prof. Kirsten Jensen).


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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Yasen Mutafchiev
    • 1
    • 2
    • 3
  • Jean Mariaux
    • 1
    • 2
  • Boyko B. Georgiev
    • 3
  1. 1.Natural History Museum of GenevaGeneva 6Switzerland
  2. 2.Department of Genetics and EvolutionUniversity of GenevaGenevaSwitzerland
  3. 3.Institute of Biodiversity and Ecosystem ResearchBulgarian Academy of SciencesSofiaBulgaria

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