Phylogeny of P. xylostella moths using mtDNA data. Neighbour-joining tree of P. xylostella mtDNA (CO1) haplotypes. Numbers in brackets show individuals with a given haplotype. Geographic occurrences are shown as Asia (AS), Africa (AF), Australasia (AU), Europe (E) and Hawaii (H). The broken line shows that the long branch between Clade A (italics; all 21 individuals infected with PlutWB1) and Clade B (normal text; all 71 not infected) is not to scale. A further Clade C (all 26 individuals from Australasia) is shown in bold. Sequences have been deposited in Genbank with accession numbers EU833237–833257.