dragonflies

1. hindwings larger in base than front wings

2. wings extedned horizontally at rest

1. triangles in wings same size and shape

2. compound eyes meet on dorsal side

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1. eyes do not meet dorsally

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1. Eyes meet dorsally, but only for short distance

2. triangles of different shapes and sizes

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damselflies

1. wings equal in size and shape

2. wings held vertically over abdomen at rest

1. wings gradually narrowed at base

2. 10 or more antenodal cross veins

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1. wings stalked at base

2. 2 antenodal cross veins

3. M3 arises closer to arculus than nodus

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1. wings stalked at base

2. 2 antenodal cross veins

3. M3 arises behind nodus

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1. 10 mm or less

2. front tibia enlarged for digging

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1. pronotum extending over abdomen

2. tarsal formula: 2,2,3

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1. pronotum not extending back over abdomen

2. tarsal formula 3,3,3

3. tympana located on side of 1st abdominal segment

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1. long filiform antennae

2. usually large, green

3. tarsi 4 segmented

4. ovipositor sword shaped

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1. similar to Tettigoniidae

2. usually wingless, gray or brown

3. tympana generally lacking

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1. slightly flattened body

2. tarsi 3 segmented

3. ovipositor usually needle shaped

4. long, filiform antennae

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1. front legs modified for digging

2. body brown and hairy

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1. body small, usually less than 18mm

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1. body larger than 18mm

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