| Examples: | cockroaches, mantids |
| Wings: | 0-4; forewings narrow and thickened; hindwings folded fanwise |
| Mouthparts: | chewing |
| Usual number of tarsal segments: | 5 |
| Metamorphopsis: | simple |
| Usual size: | medium to large |
| Where usually found: | on vegetation, under debris, in houses |