Myriapod anatomy

right|thumb|upright|Earwig with large cerci (top) Cerci (: cercus) are paired appendages usually on the rear-most segments of many arthropods, including insects and symphylans. Many forms of cerci serve as sensory organs, but some serve as pinching weapons or as organs of copulation. In many insects, they simply may be functionless vestigial structures.

specialized paired sensory organs found in certain groups of myriapods and hexapods