The thaicus -group
The thaicus -group was informally proposed by Grootaert & Meuffels (2001) based on the smaller size of the specimens, the unmodified shape of the wings and the absence of fields of microtrichia on the wing membrane. The apparent lack of a confident morphological synapomorphy raises doubts about the monophyly of this group. Additionally, it is genetically not supported either, as can be seen on a neighbour joining tree based on the COI gene (Fig. 10). Yet, the group-name is provisionally still applied. It is represented by two species in Thailand: C. thaicus and C. mayakunae, new species .