lyriform organ

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Last updated

June 30, 2026

Quick Summary

A lyriform organ is a cuticular groove found in many spiders, often occurring in groups on their legs and sternum. These organs are connected to nerve endings and are thought to function as organs of hearing, detecting mechanical vibrations and aerial sounds.12

While some lyriform organs may have a kinesthetic function, providing information about body part movements, a specific type found on the metatarsal segment of spider legs is believed to be involved in sound reception. These organs consist of slits containing fluid chambers, where filaments connected to nerve cells are stimulated by vibrations transmitted through the tarsus. Studies have shown spiders respond to a wide range of frequencies, suggesting these structures play a role in their sensory perception.2

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sound reception
Anatomical evidence
…contain many slitlike openings, called lyriform organs, that have been considered as sensory in nature. Most of these organs probably have a kinesthetic function and thus provide information on local movements of body parts. There is one type of lyriform organ, however, that differs from the others in its location…
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…contain many slitlike openings, called lyriform organs, that have been considered as sensory in nature. Most of these organs probably have a kinesthetic function and thus provide information on local movements of body parts. There is one type of lyriform organ, however, that differs from the others in its location…
Read More