Species composition of hymenopterous parasitoids attacking a garden pea leaf-miner fly, Chromatomyia horticola (Diptera: Agromyzidae) on garden pea plants and its regional differences in Japan

Abstract

The species composition of hymenopterous parasitoids attacking a garden pea leaf-miner fly, Chromatomyia horticola on garden pea plants was investigated at three locations in Japan. In Tsu, Mie Prefecture, Halticoptera circulus, Diglyphus isaea, Dacnusa nipponica, and Diglyphus minoeus predominantly emerged from C. horticola mines. D. nipponica was the dominant species in Fukuyama, Hiroshima Prefecture. Meanwhile, H. circulus, D. nipponica, Opius spp., and D. isaea were collected in large numbers in Koshi, Kumamoto Prefecture. These results revealed marked regional differences in parasitoid species composition. In addition, we compared these results with the results of corresponding surveys in other places.