Figure 4. Phylogenetic relationships between coronaviruses (CoVs) (left) and bats (right) in the A) Vespertilionidae and B) Rhinolophidae. Abbreviations on both sides denote viruses harbored by bats (marked as V on the left) and bats (marked as B on the right). Mm, Miniopterus magnater; Sk, Scotophilus kuhlii; Mr, Myotis ricketti; Tp, Tylonycteris pachypus; Pp, Pipistrellus pipistrellus; Pa, P. abramus; Rs, Rhinolophus sinicus; Rf, R. ferrumequinum; Rp, R. pearsoni; Rm, R. macrotis. Boldface branches in panel B contain severe acute respiratory syndrome–like CoVs reported. Lines between bat and virus trees were added to help visualize congruence or incongruence. Although this figure implies differences in propensity for host shifts between these families, all but 1 of the vespertilionid CoVs are from different genera, whereas all rhinolophid CoVs are from the same genera, which make meaningful comparisons difficult. Overall mean genetic differences are much greater between vespertilionid species than between rhinolophid species.