The dorsal part of the bifid terminal end of the conductor and the RTA with its round and plate-like ventral branch are two very distinctive characters for the determination of Teg. annae and not confusable with other known species so far. Females do show close similarity in genitalia with Teg. domestica but can be separated from this species by the distinctly oval vulva (more irregularly globular in Teg. domestica).