CFM surveys
CFM surveys in 2017 and 2018 recovered larvae at 135 of the 547 sites sampled in the northern prairie regions of Manitoba, Saskatchewan, and Alberta (excluding the Peace River Region) (Fig. 1), albeit in low numbers (<4) at most sites. Areas with positive larval records broadly corresponded to the black, dark grey, and, to a lesser extent, dark brown soil zones where canola production is the highest (Fig. 1A & B, Canola Council of Canada 2020b). These regions are bordered to the north by parkland or boreal forest, and to the south by drier regions where other Brassicaceae crops, such as mustard, are produced in higher quantities than canola (Diverse Field Crops Cluster 2020).
Sequence data characteristics and de novo locus construction