Forewings are abruptly bent down to cover the sides of the body
Hindwings are acuminate. They are produced into a pair of long processes which project
beyond the abdomen.
Cerci are long and unsegmented
Auditory organs and stridulatory organs are similar to long horned grasshopper. Males
stridulate during night. They produce a shrill chirping noise.
Gryllus sp . It is household pest.
3. Gryllotalpidae : (Mole crickets)
They are brown coloured insects found inside the burrows. Eyes are reduced.
Pronotum is elongate, ovate and rounded posteriorly.
Forelegs are fossorial. Tibiae are expanded and digitate.
Hindwings are extended beyond the tegima as a pair of processes
Special stridilatory structures are absent. A humming sound is produced by rubbing the
forewings.
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A pair of tympanum is found on the order surface of the tibiae.
Ovipositor is vestigeal.
Mole crickets burrow into the soil and feed on tender roots of growing plants.
Gryllotalpa africana is a pest on stored potatoes.
