FIG 3.

Relative abundances of selected bacterial lineages in the gut microbiota that contribute strongly to the separation of cockroaches, lower termites, and higher termites in the ordination analyses. The lineages were selected from the top 50 taxa (see Table S3 in the supplemental material) and subjectively sorted according to patterns (A to E) as explained in the text. The color scale is logarithmic to emphasize rare taxa. The numbers indicate host species (see Table 1). The symbols indicate feeding habits (see the legend to Fig. 2). The tree (F) illustrates a simplified phylogeny of major host lineages (a, other cockroaches; b, Blattidae; c, Cryptocercidae; d, Mastotermitidae; e, Termopsidae; f, Hodotermitidae; g, Kalotermitidae; h, Rhinotermitidae; i, Macrotermitinae; j, Apicotermitinae; k, Termitinae; l, Nasutitermitinae). The branches connecting species that harbor gut flagellates are in red.