Table 2.

Ptr races, structure and distribution.

Race	HSTs	Patho type	Predominant regions
Race 1	ToxA and ToxC	1 and 2	North Africa (Benslimane et al., 2011)
Race 2	ToxA	1 and 2	Great Plains of North America (Lamari et al., 1995; Lamari et al., 1998; Ali and Francl, 2003; Singh, 2007; Aboukhaddour et al., 2013) and the Southern Cone Region of South America (Singh, 2007)
Race 3	ToxC	3	North America (Lamari et al., 1998; Ali and Francl, 2003; Singh, 2007; Aboukhaddour et al., 2013) and the Caucasus region (Lamari et al., 2005)
Race 4	No HTSs	4	North America (Lamari et al., 1995; Lamari et al., 1998; Ali and Francl, 2003; Singh, 2007; Aboukhaddour et al., 2013) and North Africa (Benslimane et al., 2011)
Race 5	ToxB		Algeria (Lamari et al., 1995), the United States (Ali et al., 1999), Canada (Ali et al., 1999), Azerbaijan, and Syria (Lamari et al., 2005) but is rarely found in North America
Race 6	ToxB and ToxC		Algeria (Strelkov et al., 2002)
Race 7	ToxA and ToxB		middle east and Caucasus regions (Lamari et al., 2003; Lamari et al., 2005)
Race 8	ToxA, ToxB, and ToxC		middle east and Caucasus regions (Lamari et al., 2003; Lamari et al., 2005)