Section 3
Chapter 2,217

Seasonal occurrence of the rice gall midge, Orseolia oryzae (Wood-Mason) and parasitism by its parasitoids, Platygaster oryzae (Cameron) and P. foersteri (Gahan) (Hymenoptera, Platygasteridae) in paddy fields in Thailand

Kobayashi, M.; Kadkao, S.

Japanese Journal of Entomology 57(4): 901-915


Accession: 002216443

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The seasonal occurrence of immature stages of the cecidomyiid Orseolia oryzae was investigated in rice fields in northern Thailand in 1973-75, and life tables were constructed for evaluating the impact of 2 egg-larval parasitoids, Platygaster oryzae and P. foersteri, on its population. O. oryzae completed 2 generations a year when the eggs of the 1st generation were deposited before mid-August.

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