Summary of the relationships observed in published phylogenies of T. dimidiata s. l. Groups 1 and 2 are T. dimidiata s. s. (sensu stricto), Group 3 is T. sp. aff. dimidiata (groups based on Bargues et al., 2008), Group 4 is T. sp. aff. dimidiata (cave) (Dorn et al., 2016). (A) Relationships based on mitochondrial cyt b and ND4 genes (Dorn et al., 2016; Monteiro et al., 2013), (B) Relationships based on the multi-copy nuclear ITS-2 gene (Dorn et al., 2016). Note the conflict between the nuclear gene and mitochondrial gene topologies. * indicates T. hegneri was recovered within that clade.