A strict consensus tree was obtained by implied weighting (IW). Solid bullets (●) indicate non-homoplastic synapomorphies; open bullets (○) indicate homoplastic characters. Bootstrap values (BS, shown as ‘–’ if absent) and Bremer support values (BR, shown as ‘*’ if absent) are separated by a slash ‘/’ and marked beside each node. A O. robusta Jouault, Rasnitsyn and Perrichot; B T. hui Engel; C L. lii Li, Rasnitsyn, Shih and Ren; D S. chundanae Tan and van Achterberg; E S. anijimensis Watanabe and van Achterberg; F P. notiochinensis Tan and van Achterberg; G F. achterbergi Gupta and Gawas.