Phylogeny of DBM moths using nuclear data. Neighbour-joining tree of the 74 different Plutellaxylostella nuclear DNA (L27a gene) sequences. Numbers in brackets show multiple individuals with the same DNA sequence. The clade with bold labels and thick lines is supported by a major indel (see text) and has bootstrap support of 65. Country of origin is given for sequences found only in one moth. Sequences have been deposited in Genbank with accession numbers EU833259–833333.