Leptus
![This photograph shows a species of Balaustium, its eyes posterior to the position they occupy in Leptus](/Images/godic/202501/23/Balaustium1035.jpg")
Leptus is a genus of large mites belonging to the family Erythraeidae; they resemble members of the related genus Balaustium, but can be distinguished by the eyes, which in Leptus species are set much further forward on the body than in Balaustium species.