Some rub their legs and their wings, while others rub their legs against their head or their wings against their body. The most well known insects that use stridulation to produce sound are the crickets (rub their wings together) and grasshoppers (rub legs or leg and wing), but some ants, wasps, and beetles also use stridulation.
Behavior and habits of crickets Crickets have long antennae (as long as their body or longer) and large back legs, which they use for jumping or hopping. Male crickets chirp by rubbing their wings together. Adult females have a sword-like egg-laying device extending backwards from the tip of the abdomen.
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Crickets stridulate ("sing") by rubbing their wings together, while grasshoppers stridulate by rubbing their long hind legs against their wings. Grasshoppers detect sound by means of little 'ears' at the base of their abdomen; in crickets these are on the front legs.
Crickets will rub their legs together as a way of cleaning off the dirt. Their ears are located under the knees of their legs. This means that, for the ears to remain sensitive, they must be kept clean always.
Diagnostic features include legs with 3-segmented tarsi; as with many Orthoptera, the hind legs have enlarged femora, providing power for jumping. The front wings are adapted as tough, leathery elytra, and some crickets chirp by rubbing parts of these together. The hind wings are membranous and folded when not in use for flight; many species, however, are flightless.
Grasshoppers and locusts have a row of pegs like a comb on their back legs. They scrape these pegs against the hard edges of the front wings to make sounds. Crickets and katydids produce sounds by rubbing their wings together. In order to hear these sounds, orthopterans have a tympanum (ear) on each front leg, just below the knee.
There’s a persistent myth that crickets rub their legs together to make sound. In fact, they sing with their wings. In fact, they sing with their wings. Run your finger down the teeth of a comb ...
Crickets produce sound by rubbing their wings together while grasshoppers rub their hind legs against their wings. The way these two insects detect sound is also different. Grasshopper ‘ears’ are located at the base of their abdomen, but crickets sport them on their front legs.