The Analgidae Megninia ginglymura is found externally on the feathers of the body and wings of a wide range of birds including the Passeriformes. The male has greatly enlarged third legs and large posterior lobes with copulatory suckers. Megninia ginglymura may cause feather-pulling activity in pullets.
The female has all legs of similar size. More than 25 species of Analgoidea are found on domestic poltry throughout the world but records of economic damage by these mites is rare.