| Examples: | stoneflies |
| Wings: | 4; forewings narrow; hindwings with large anal lobe |
| Mouthparts: | chewing |
| Usual number of tarsal segments: | 3 |
| Metamorphopsis: | simple; nymphs aquatic |
| Usual size: | medium |
| Where usually found: | near water |
| Other Promimnent Features: | long filiform antennae and cerci; gills on nymph are filamentous and located on the thorax |