Published online by Cambridge University Press: 10 July 2009
In south India the cultivated oyster mushroom Pleurotus citrinopileatus Singer, which is treated as a subspecies of P. cornucopiae (Paul, ex Pers.) Rolland by some authors, is attacked by larvae of the phorid fly Megaselia tamilnaduensis Disney sp. n. The larvae feed on the mycelium. When more than 3% of the area of the surface of 2.5 kg cylindrical mushroom beds had been damaged the subsequent yields of sporophores fell from 400–500 g to 200–350 g. The new species is described and biological data are summarized.