Taylorimyia iota (Johnston & Tiegs) (Diptera: Sarcophagidae), a parasitoid of Biprorulus bibax Breddin (Hemiptera: Pentatomidae).

'Taylorimyia iota' (Johnston and Tiegs) is recorded parasitising adult and nymphal 'Biprorulus bibax' Breddin in the Chinchilla district of southern Queensland. Egg-like structures (ELS) (1-22 per bug) were found attached to dorsal and ventral surfaces of up to 36% of 'B. bibax' collected during spring-summer from 'Eremocitrus glauca' (Lindl.) Swing. One male bug dissected in September 1998 contained a large maggot. One adult 'T. iota' emerged in the laboratory from a female bug collected in November 1998. Five of 19 adult 'B. bibax' with attached ELS collected in November 1998 and dissected after death, contained small maggots. In November 1998, adult 'T. iota' were observed 'visiting' wild and caged 'B. bibax'. Adult 'B. bibax' confined in a glass tube with larvae that emerged from the abdomen of a damaged 'T. iota', carried ELS after three hours. Microscopic observations suggested 'T. iota' larvae secreted these structures, presumably for protection, during entry into 'B. bibax'. The biology and potential of 'T. iota' as a natural enemy of 'B. bibax' is discussed.