Fig. 3.

Neighbor-joining tree of the ITS sequences obtained from selected flagellates, illustrating the phylogenetic diversity of the Trichonympha species from Zootermopsis nevadensis (this study) and their relationship to those from Zootermopsis angusticollis (45; sequences are grouped). The tree is based on an alignment of 450 base positions and was rooted with the ITS sequences of Trichonympha agilis from Reticulitermes santonensis. Phase-contrast photomicrographs illustrate the morphology of the respective species (scale bars=50 μm). Circles indicate node support (○, >80%; ●, >95% bootstrap confidence).