Cosmotermitinae Engel, subfam. nov.

Type genus. Cosmotermes Zhao et al., 2020 .

Diagnosis. In the soldier caste these termites can be distinguished most notable from Arceotermitinae by the presence of compound eyes, albeit reduced; the narrower pronotum; and the in the left mandible the posterior margin of left marginal tooth is shorter than or equal to the anterior margin of the second marginal tooth (the posterior margin of the left marginal tooth is longer than the anterior margin of the second marginal tooth in Arceotermes: Fig. 6). Unlike Stolotermitidae, the basal suture in alates of Cosmotermes is convex rather than straight and diagonal.