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  • Ecology, life-history and morphometrics of the Australian chigger mite Guntheria coorongensis (Hirst) (Acarina: Trombiculidae)

    Southcott, R.V.

    1997 - Volume: 38 Issue: 2 pages: 127-139

    Date published: 1997-05-31

        ( 4.49 Mo)   

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    Keywords: Guntheria coorongensis; Acarina; Trombiculidae; taxonomy; life history; ecology

    The ecology, life history and morphometrics of the Australian trombiculid mite Guntheria coorongensis (Hirst, 1929) have been studied. Larvae were captured ectoparasitic on Rattus fuscipes greyii in the south-east of South Australia and successfully reared to protonymphs and deutonymphs, which are described. Comparisons are made of the larvae with the type series from South Australia, as well as with other Australian larvae and deutonymphs previously synonymized with this species, using morphometric criteria. Significant differences are found between the metric data of both larva and deutonymph from Guntheria cairnsensis (Womersley and Heaslip, 1952), so that the latter species is restored nomenclaturally. Teratological abnormalities of the reared deutonymphs of Guntheria coorongensis are recorded.

    Photos: Varroa destructor (Varroidae) on a honey bee. Low temperature -Scanning electron microscopy photograph. Material collected and fixed for LT-SEM: J. Pettis, USDA-ARS-Bee Lab. and R. Ochoa, USDA-ARS-SEL; LT-SEM photo: E. Erbe and C. Pooley, USDA-ARS-CEMU © USDA; Petrobia harti (Tetranychidae) © INRA - Alain Migeon; Dermanyssus gallinae (Dermanysssidae) © Ecole Nationale Vétérinaire de Lyon – Lise Roy; Adult Ixodes sp. (Ixodidae) engorging on an Atlantic puffin Fratercula arctica © Andy Darrington; Panonychus ulmi (Tetranychidae): hatching of a winter egg © Université de Lausanne – Centre de microscopie électronique – Cazelles

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