Fig. 3.

DNA sequencing analysis of a 500-bp portion of the CO1 gene identifies a fourth potato psyllid haplotype. A 500-bp portion of the CO1 gene of the novel psyllid haplotype was sequenced for comparison to the DNA sequence of the three known haplotypes: Central, Western, and Northwestern. Sequencing analysis identified 6 SNPs between the Central and fourth, Southwestern haplotype, 7 SNPs between the Western and Southwestern haplotypes, and 15 SNPs between the Northwestern and Southwestern haplotypes. The Southwestern haplotype contained 2 new SNPs not present in the other three haplotypes (*). SfcI digestion sites are noted above the specific CTAC/TAG sequences.