<p> </p>
<p><strong>Supplementary Fig. S1.</strong> Geographical relationships among collection sites of <em>Bursaphelenchus tadamiensis</em> materials.</p>
<p><strong>Supplementary Fig. S2.</strong> Right lateral view of <em>Bursaphelenchus tadamiensis</em> NKZ280. A: Lip and stylet region; B: Body surface showing four-lined lateral field; C: Pharyngeal region in two different focal planes (P-I = pharyngo-intestinal junction; Hem = hemizonid; NR = nerve ring; EP = secretory-excretory pore); D: Female genital tract (Ov = ovary; Sp = spermatheca; Cr: crustaformeria; Ut = uterus; V = vulva; PUS = post-uterine sac).</p>
<p><strong>Supplementary Fig. S3.</strong> Right lateral view of male tail of <em>Bursaphelenchus tadamiensis</em> NKZ280 in four different focal planes (Cl = cloacal opening; P + number = genital papillae labelled according to Ryss <em>et al.</em> (2005)).</p>
<p><strong>Supplementary Fig. S4.</strong> Right lateral view of female tail of <em>Bursaphelenchus tadamiensis</em> NKZ280. A: Whole tail in two different focal planes to show anal position (An = anus); B-P: Variation of tail tip shape.</p>
<p><strong>Supplementary Fig. S5.</strong> Right lateral view of female tail of <em>Bursaphelenchus tadamiensis</em> NKZ281. A: Whole tail in two different focal planes to show anal position (An = anus); B-J: Variation of tail tip shape.</p>
<p><strong>Supplementary Table S1. </strong>Aligned ITS sequences of three <em>Bursaphelenchus tadamiensis strains</em> in FASTA format.</p>
<p><strong>Supplementary Table S2. </strong>Aligned <em>mtCOI</em> sequences of three <em>Bursaphelenchus tadamiensis strains</em> in FASTA format.</p>