Folia Parasitologica, vol. 55 (2008), issue 4

Folia Parasitologica 55[4] 301-308 (2008) | 10.14411/fp.2008.038

A redescription of Trichosurolaelaps dixous Domrow, 1972 (Acari: Laelapidae), from Trichosurus cunninghami (Marsupialia: Phalangeridae) from southern Australia

Jasmin Hufschmid1,2, Ian Beveridge1, Kathrine Ann Handasyde2, David Michael Spratt3
1 Faculty of Veterinary Science, University of Melbourne, Veterinary Clinical Centre, Werribee VIC 3030, Australia
2 Department of Zoology, University of Melbourne, Parkville VIC 3010, Australia
3 CSIRO, Sustainable Ecosystems, Canberra ACT 2601, Australia

The adults of Trichosurolaelaps dixous Domrow, 1972 are redescribed from a population of Trichosurus cunninghami Lindenmayer, Dubach et Viggers, 2002 in south-eastern Australia. The nymphal stages are described for the first time. Morphologically, T. dixous is similar to Trichosurolaelaps crassipes Womersley, 1956. Morphological differences between the pre-female deutonymphs and adult females of the two mite species are the presence of a single large ventral spur on tibia I of T. dixous. Males of T. dixous could not be distinguished from T. crassipes morphologically and the idiosomal length of male T. dixous was variable (475-683 μm). Protonymphs of the two mite species differed only in size, with that of T. dixous being larger. Although T. crassipes was prevalent in a sympatric population of Trichosurus vulpecula and has been reported from other populations of T. cunninghami in southern Australia, it was never recovered from the population of T. cunninghami studied.

Keywords: Trichosurolaelaps dixous, Trichosurolaelaps crassipes, Trichosurus cunninghami, Trichosurus vulpecula, ectoparasites, Acari, Laelapidae

Received: April 16, 2008; Accepted: August 12, 2008; Published: December 1, 2008


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