Chouioia cuneaYang (Hymenoptera: Eulophidae) is an effective parasitoid of many lepidopteran pests in China. Specifically,C. cuneahas successfully suppressed populations of the fall webworm,Hyphantria cunea(Drury) (Lepidoptera: Arctiidae), an invasive and quarantined pest in China. Fall webworm biological control programmes in China have been aided by the development of artificial rearing technology forC. cunea. While researchers have determined some aspects of this parasitoid’s biology, such as fecundity and ratio of female offspring, as well as rearing methods, there was less information on the behavioural and ecological mechanisms by whichC. cunearegulates host populations. Here, we review the research and application ofC. cuneasince it was first discovered in China. [ABSTRACT FROM AUTHOR]