Bionomics of sorghum midge (Contarinia sorghicola (Coq.)) in Queensland, with particular reference to diapause

Abstract

During 1950-1957 investigations of sorghum midge (Contarinia sorghicola (Coq.) ) were made with respect to hosts, sorghum varietal susceptibilities, life history and seasonal populations, with particular reference to the factors influencing development from diapause. All major hosts recorded are members of the genus Sorghum. Minor hosts include several native grasses, of which Dichanthium sericeum is the most common, but these hosts have no real influence on pest populations in sorghum crops. Differential varietal susceptibilities amongst commercial sorghums are not evident, although preferences in sites for oviposition are shown under certain conditions.