Dichotomous Keys - Text Format
Key to common families of Orthoptera (Grasshoppers & Crickets).

No.	From	Description	Go to	Name
1a		The front femora are almost as long and thick as the hind femora	2
1b		The hind femora are much longer and thicker than the front femora	3
2a	1a	The front tibiae are modified into scoops for digging		Gryllotalpidae (Mole Crickets)
2b	1a	The front tibiae are enlarged, but not modified into scoops		Gryllacridadae (Jerusalem Crickets)
3a	1b	The pronotum extends to cover the abdomen		Tetrigidae (Pygmy Grasshoppers)
3b	1b	The pronotum does not cover the abdomen	4
4a	3b	The body is 4-10 mm long; the end of the abdomen has two pairs of projections		Tridactylidae (Pygmy Mole Crickets)
4b	3b	The body is usually >10 mm long, the end of the abdomen has one pair of projections (cerci)	5
5a	4b	The antennae are short (usually less than half as long as the body); auditory organs, when present, are on he sides of the first abdominal segment	6
5b	4b	The antennae are long (usually at least as long as the body); auditory organs, when present, are on the front tibiae	7
6a	5a	The antennae are shorter than the front femora; wings are missing		Eumasticidae (Monkey Grasshoppers)
6b	5a	The antennae are longer than the front femora; wings are present		Acrididae (Short-horned Grasshoppers)
7a	5b	The wings are missing; the body is humpbacked		Gryllacridadae (Cave Crickets)
7b	5b	The wings are present but sometimes small; the body is not usually humpbacked	8
8a	7a	The ovipositor is shaped like a needle; the body is often brown		Gryllidae (Crickets)
8b	7b	The ovipositor is flattened like a sword; the body is usually green		Tettigoniidae (Long-horned Grasshoppers, Katydids)

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