Tetranychus canadensis ( McGregor, 1950 )

SEEMAN, OWEN D. & BEARD, JENNIFER J., 2011, Identification of exotic pest and Australian native and naturalised species of Tetranychus (Acari: Tetranychidae), Zootaxa 2961 (1), pp. 1-72 : 24

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.

Figures

FIGURE 11. Tetranychus canadensis (McGregor), female. (a) Pretarsus I; (b) Tarsi I; (c) Pregenital striae; (d) Dorsal striae between setae e and f; (e) Hourglass pattern of dorsal striae between setae e and f. Male: (f) Pretarsus I, type specimen; (g) Pretarsus II, type specimen; (h) Aedeagus, type specimen; (i) Aedeagus.