1. Hemimetabola pt. 1 Ephemeroptera through Isoptera

2. Order: Ephemeroptera Most primitive pterygotes Sail shaped wings held upright 2, 3 long cerci Short antennae Larvae are important fish food Adults do not feed

3. Order: Odonata Long, equal wings Long bodies Predatory Naiads and adults Dragonflies (Stout bodies, round heads): Aeschnidae, Gomphidae, Libellulidae Damselflies (thinner bodies, wide heads): Coenagrionidae, Lestidae

5. Order: Blattodea Cockroaches Two cerci Enlarged pronotum May have wings Long antennae Mostly detritivores, May eat fruit or wood

6. Order: Mantodea Mantids Long thorax Raptorial forelegs Triangular head Beneficial predators

7. Order: Isoptera Major Structural Pest Interesting Social Structures Look like ants but: Straight antennae Straight waist Usually white or brown