Figure 2.

Phylogenetic tree of DWV-A/KV from different insect species including bee, wasp, and ant as well as Varroa destructor. The maximum likelihood method (ML) and bootstrap resampling (1,000 repetitions) were used to construct a phylogenetic tree. The number on each branch of the phylogenetic tree represents the bootstrap value (1,000 repetitions), and the branches with different colors indicate different species infected by different DWV strains. The different colors indicate DWV strains from different hosts. Apis mellifera, Apis cerana, Vespa crabro, Varroa destructor, vespids wasp, ant, polistes chinesis, Vespula vulgaris, stingless bees, bombus, and unknown host are indicated in orange, gray, blue, green, brown, purple, yellow, khaki, red, gray-blue, and black, respectively.