orientalis -group s.l., aspinosus -subgroup

Dyscritobaeus tanzaniensis possesses a preoccipital lunula similarly to other species of orientalis -group s.l., but the mesoscutellum overhangs metascutellum; this species shares this feature only with the first described species of the subgroup, D. aspinosus Mineo, O’Connor et Ashe, known from Queensland, Australia.