Identification of exotic pest and Australian native and naturalised species of Tetranychus (Acari: Tetranychidae) Author SEEMAN, OWEN D. Author BEARD, JENNIFER J. text Zootaxa 2011 2011-07-08 2961 1 1 72 http://dx.doi.org/10.11646/zootaxa.2961.1.1 journal article 10.11646/zootaxa.2961.1.1 1175­5334 10095728 Tetranychus canadensis ( McGregor, 1950 ) ( Fig. 11 ) Type specimens examined, Canada : Approximately 40 specimens on one slide, of which about 20 are circled on the slide; the single male on this slide is assumed to be the holotype . Ontario , 1938, ex Apple Malus domestica (Rosaceae) , Type 1733, 38-12699. In USNM . Non-type specimens examined, U.S.A. : 2 females , 2 males , Washington D.C. , 13.vi.1961 , E.W. Baker, ex Horse Chestnut Aesculus hippocastanum (Sapindaceae) . In USNM . 1 male , Estey, Michigan , 13.vii.1962 , D.M. Tuttle, ex Staghorn Sumach Rhus typhina (Anacardiaceae) , det. D.M. Tuttle. 3 females , Mesa, Arizona , 16.x.1964 , R.D. Gerhart, ex Arizona Ash Fraxinus vekutina (Oleaceae) , det. D.M. Tuttle (two slides). 1 male , Yuma, Arizona , 6.v.1967 , ex Fieldbind Weed Convolvulus arvensis (Convolvulaceae) . 1 female , Somerton, Arizona , 21.v.1962 , G.L. Arviza, ex White [or Silver] Horse Nettle, Bull-nettle, Trompetilla Solanum elaeagnifolium (Solanaceae) . All in QDPI .