Suborder Ensifera

1. Anterior legs modified for digging, with femora flattened and tibia with teeth strongly sclerotized.......... Gryllotalpidae

- Anterior legs not modified for digging, normal (without modification)............................................ 7

2. Very small size (less than 6 mm), eyes and ocelli reduced, apterous, body dorsally flattened, posterior coxa almost ventrally joined and posterior femur very broad........................................................ Myrmecophilidae

- Size small (less than 15 mm) eyes and ocelli present, winged or apterous, body cylindrical, posterior femur not very broad.. 8

3. Body covered with scales and face swollen...................................................... Mogoplistidae

- Body lacking scales and face not swollen................................................................... 9

4. Tarsi 3-segmented.............................................................................. Gryllidae

- Tarsi 4-segmented.................................................................................... 10

5. Base of anterior tibia lacking auditory tympanum, tibiae thin, tarsi depressed, flattened with small pads...... Gryllacrididae

- Base of anterior tibia with auditory tympanum.............................................................. 11

6. Stridulatory apparatus located at the base of tegminae, brachypterous or macropterous, mandibles symmetrical...................................................................................................... Tettigoniidae

- Stridulatory apparatus involving areas of femur and abdomen, apterous, head very large in relation to conical body, mandibles asymmetrical........................................................................... Anostostomatidae