1. EPHEMEROPTERA Aquatic Nymphs, winged adults Larvae feed on aquatic plants and smaller invertabrates Adults feed on… nothing at all!!! Adults live only a matter of hours to days What kind of metamorphosis is this?

2. Ephemeroptera Nymphs (Naiads) Have Gills! 3 Cerci (tails) May live for several years Prey on mostly plants and debrie, also small invertabrates

3. Ephemeroptera Adult Ephemeral??? Pair of large triangular forewings, often with a thickened leading edge Usually a pair of reduced hindwings Tiny antennae Large forelegs Usually 2-3 cerci (tails)

4. ODONATA Aquatic Nymphs, Winged Adults Both Naiads and Adults are predacious, feeding on insects or even tiny fish and frogs Cannot fold wings on back Wings move independently Odonata Anisoptera Dragonfly Gomphidae Clubtails Aeshnidae Darners Libellulidae Skimmers Zygoptera Damselfly Lestidae Spreadwings Coenagrionidae Narrow Winged

5. ODONATA NAIADS Have Posterior Gills Lower jaw extends to catch prey Tend to live on bottom of streams ponds Anisoptera Nymphs: Short and Wide Zygoptera Nymphs: Long and Narrow

6. DRAGONFLIES VS DAMSELFLIES

7. ANISOPTERA: AESHNIDAE (DARNERS) Clear Wings Large Eyes Touch Tend to have bright bodies: Blue, Green, and Brown Live near ponds and streams

8. ANISOPTERA: GOMPHIDAE (CLUBTAILS) Have separated eyes Large, sprawling legs Club like widening at end of abdomen

9. ANISOPTERA: LIBELLULIDAE (SKIMMERS) Bright colored bodies Bodies are shorter than wingspan Wings often have bands or spots

10. ZYGOPTERA: COENAGRIONIDAE (NARROW- WINGED) Most common Damselflies Wings held upright at rest Bright colored bodies Clear wings Naiads have leafy gills

11. ZYGOPTERA: LESTIDAE Wings diverge at rest Wings clear, bodies colored Naiads have stalk like gills with rounded ends

12. DICHOTOMOUS KEYS Based on dichotomies, you must choose one of two options By repeating this step, you can narrow down to more and more specific classifications Answers often involve whether a diagnostic trait is present Example: Does this insect have wings?

13. Does it have cerci (tails?)

14. ODONATA Does it have a stout body and hold its wings flat at rest? Is Body Longer than Wingspan? Do its eyes touch at top of head? Odonata Anisoptera Dragonfly Gomphidae Clubtails Aeshnidae Darners Libellulidae Skimmers Zygoptera Damselfly Lestidae Spreadwings Coenagrionidae Narrow Winged

15. HOW THE KEY WOULD LOOK 1.It has wings4 It doesn’t have wings2 2.It has six legs3 It doesn’t have six legsit’s not an insect 3.Its ancestors have wings4 It never had wingsapterygota 4.It only lives for a dayephemeroptera It lives for many days5 5.It has bulging eyesZygoptera Its eyes do not bulgeAnisoptera