Mycomya marginata (Meigen, 1818)

This species has been reared on Sebacina sp., Auricularia mesenterica (S. F. Gray) Pers., Stereum hirsutum (Fr.) S. F. Gray, Chondrostereum purpureum (Fr.) Pouz., Sparassis crispa (Fr.) Fr., Phlebia radiata Fr., Merulius tremellosus Fr., ? Antrodia sinuosa (Fr.) Karst., Trametes versicolor (Fr.) Pil. and on fungoid wood (Edwards 1925, Madvar 1937, Parmenter 1953, Buxton 1960, Plachter 1979, Hutson et al. 1980). According to Parmenter (1953), the larvae fed by scraping the upper part of the fungus (Merulius) and left a trail formed by a viscous thread issuing from the mouth as they retreated. They worked under a network of these jelly-like threads. They pupated in a light brown pupal case, under the cover of a dead leaf drawn over the fungus and tied down with threads. The larval web has been described by Plachter (1979:183, Fig. 5). The larvae were found on 9 November by Parmenter and pupation took place about a month later (7 December). The
pupal stage lasted about one week (up to 13 December).