Metapygmephorellus Rahiminejad, Hajiqanbar & Khaustov gen. nov. (Acari: Prostigmata: Pygmephoridae) (type species Metapygmephorellus colydius Rahiminejad & Hajiqanbar sp. nov.) is described and illustrated based on females phoretic on Colydium elongatum (F., 1787) and Dorcus parallelipipedus (L., 1758) (Coleoptera: Zopheridae and Lucanidae), respectively, which were collected from the forests in northern Iran. Another new species, Metapygmephorellus orientalis Khaustov sp. nov., collected from the bark beetle Hylurgops interstitialis Chapuis, 1875 (Col.: Curculionidae), from Far East Russia is also described. Pygmephorellus brachycercus Cross & Moser, 1971 is transferred to Metapygmephorellus gen. nov. A key to species of the genus Metapygmephorellus is provided.