palpal organ) that is used to transfer sperm to the female seminal receptacles during mating. The details of this structure vary considerably between different groups of spiders and are useful for identifying species. The pedipalps are also used by male spiders in courtship displays, contributing to vibratory patterns in web-shaking, acoustic signals, or visual displays.

The cymbium is a spoon-shaped structure located at the end of the spider pedipalp that supports the palpal organ. The cymbium