Cyparium achardi is a species of beetle of the family Staphylinidae. This species is found in south-eastern Brazil (Minas Gerais).
Description Adults reach a length of about 3–3.28 mm (males) and 3.32–3.40 mm (females). They are entirely black, with the lateral areas of some ventral sclerites lighter.
Life history Adults were collected from Marasmiellus volvatus, Marasmius haematocephalus, Leucocoprinus ianthinus, Leucocoprinus cepistipes, Hygrocybe and Leucoagaricus species.
Etymology The species is named in honour of Julien Achard (1881–1925) for his significant contribution on the Neotropical Scaphidiinae.
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