These include comparative specialists but also generalists such as T. Since the 1980s, two new species have made their appearance while nine (out of 12 i.e., 75%) species disappeared. In 2018, five species were identified with Trichogramma ostriniae representing 90% of the species complex.
During the 1980s and in 2016–2018, egg masses of the Asian corn borer (ACB), Ostrinia furnacalis, were systematically sampled from corn fields across the country. egg parasitoids (Hymenoptera: Trichogrammatidae) over a 30-year time period in China. In this study, we compared the spatial distribution, abundance and species composition of Trichogramma spp. Despite important inter-taxa and geographical variability, this can entail an extinction of ecological interactions and a decay of ecosystem functions. Globally, insect abundance and diversity are experiencing a rapid decline.
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