| Fig. 1. | Species of Osteocephalus: |
| Top. O. pearsoni, KU 136312, ♂; Middle. O. buckleyi, KU 123172, ♂; Bottom. O. verrucigerus, KU 123177, ♂. ×1.5. |
| Fig. 2. | Species of Osteocephalus: |
| Top. O. leprieurii, KU 126611, ♀; Bottom. O. taurinus, KU 126648, ♂. ×10. |