Fig. 1From: Blood-feeding, susceptibility to infection with Schmallenberg virus and phylogenetics of Culicoides (Diptera: Ceratopogonidae) from the United KingdomMost parsimonious median-joining network (ε = 0) depicting phylogenetic relationships among C. obsoletus cox1 haplotypes. The size of each circle is proportional to the corresponding haplotype frequency. Circles are coloured to represent the proportion of specimens which showed a positive (red) and negative (blue) SBV response as determined by qPCR. Branch lengths are proportional to the number of nucleotide changes between haplotypes. Black circles indicate median vectors (mv) that represent hypothetical missing or unsampled ancestral haplotypesBack to article page