Phylogenetic tree determined on the basis of the concatenated V3-V4 and capsid sequences (total positions = 1,107 nt). Statistically supporting values, which included PP values (BI [from 9,000 best trees]), bootstrapping proportions (MP [from 1,000 replicates]), and puzzling indices (ML [with 10,000 puzzling steps]), are again shown at major branches. Collapsed branches determined by MP and/or ML analysis are marked by an x at corresponding positions. The GenBank accession numbers are listed in the legend for Fig. 1.