Lebertia – Identification in progress

Lebertia -dorsal

Fig 10. Lebertia - dorsal

This water mite was found in Brittany the 24th of March 2012 (Saint-Thegonnec – Kerfeulz).

My description.

  • Length :  840µm – width : 760µm – Genital flap 176µm
  • Colour light red with darker patches
  • Eyes red
  • Legs yellowish
  • Small depression in front of the eyes.
  • Coxal shield yellowish and almost transparent.
  • General shape of coxal shield almost round.
  • Genital field partially surrounded by coxal shield
  • Y-shaped suture extending from  genital field to gnathosomal bay.
  • Legs with short swimming setae.


Identification process

With the Hopkins key, I was rapidly able to identify it as a water mite of the genus Lebertia.

In Acari II (Gerecke 2010) some similarity with the fig 8-43-e page 98 (Lebertia fimbriata female ?). Shape of coxal shield, shape of genital field, position of genital field, position of legs on coxa IV,


  • Gerecke, R. (Ed.) (2010). Chelicerata: Acari II. Süßwasserfauna von Mitteleuropa 7/2(2). Spektrum Akademischer Verlag, Heidelberg.
  • Hopkins, C.L. (1961). Key to the Water Mites (Hydracarina) of the Flatford Area. Field Studies Council.

More pictures.

Fig 20. Lebertia - ventral view


Fig 30. Lebertia - Genital area


Lebertia - Very poor lateral view to give an idea of the shape


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