| Streptocranus bispinus, antennal club. |
| Streptocranus bispinus, declivity. |
| Streptocranus bispinus, holotype, length: 2.1 mm. |
| Streptocranus bispinus, holotype top, length: 2.1 mm. |
| Streptocranus longispinis, side, length: 2.0 mm. |
| Streptocranus longispinis, top, length: 2.0 mm. |