Crickets, family Gryllidae (also known as "true crickets"), are
insects somewhat related to grasshoppers and more closely
related to katydids or bush crickets (family Tettigoniidae).
They have somewhat flattened bodies and long antennae. There are
about 900 species of crickets. They tend to be nocturnal and are
often confused with grasshoppers because they have a similar
body structure including jumping hind legs. There are four types
of cricket song: The calling song attracts females and repels
other males, and is fairly loud. The courting song is used when
a female cricket is near, and is a very quiet song. An
aggressive song is triggered by chemoreceptors on the antennae
that detect the near presence of another male cricket and a
copulatory song is produced for a brief period after successful
deposition of sperm on the female's eggs. Crickets chirp at
different rates depending on their species and the temperature
of their environment. Most species chirp at higher rates the
higher the temperature is (approx