Crickets are orthopteran insects which are related to bush crickets, and, more distantly, to grasshoppers. in older literature, such as imms, "crickets" were placed at the family level (i.e. gryllidae), but contemporary authorities including otte now place them in the superfamily grylloidea. the word has been used in combination to describe more distantly related taxa in the suborder ensifera, such as king crickets and mole crickets. they have mainly cylindrically-shaped bodies, round heads, and long antennae. behind the head is a smooth, robust pronotum. the abdomen ends in a pair of long cerci; females have a long, cylindrical ovipositor. diagnostic features include legs with 3-segment...

Source: Wikipedia