Sulabanus mamasensis species group

Definition of the species group. The species included here share a similar phallus. The widest part of the phallus is located in the middle of its length and ratio between the widest middle part at midlength and the narrowest part in the apical half of the phallic length is 2.5–4.0 (Figs. 15–26). Although some other species have the widened middle part of the phallus (Figs. 31, 35, 41, 43) the apex of the phallus is robust and the above described ratio fluctuates between 1.3 and 1.7. These species are classified in the S. pendolensis group. Altogether six species are classified in the S. mamasensis group: S. barclayi, S. cordatus, S. mamasensis, S. minor, S. nigricordatus, and S. ulci .