Principal component and structure analyses of SNP data from the full datasets comprising 18–19 Trissolcus japonicus laboratory lines. We present structure results with greatest LnP(K) and ΔK statistical support. Symbol shape depicts geographic area of collection: diamond = Switzerland, triangle = Pacific Northwest of North America, circle = China, square = Ontario, Canada (blue square = London, Ontario, Canada 2021 line). Colours behind laboratory line names correspond with geographic genetic clusters (Fig. 3). We present both modes of K=9 across its 10 replicate runs.