Distinguishing characters of D. unisexualis. A. The central temporal shield is large, often divided into two; from the first upper temporal shield in the narrowest place, it is separated by 1-3 and from the tympanum - by 2-4 transverse rows of enlarged shields (indicated by arrow); B. The anal shield is large, in front of it four small and approximately equal in size pre-anal shields are located symmetrically, the middle of which can be slightly increased. (indicated by arrow); C. Only in this species - the maxillary shield is in contact with the fronto-nasal (indicated by arrow). Photos by I. Kropachev.