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The Pear Gall-midge, C. pyrivora, one of the most dangerous Fruit-tree Pests

The Pear Gall-midge, C. pyrivora, one of the most dangerous Fruit-tree Pests

Am. Schadlingsk, Berlin 5(12): 149-155

An account is given of observations on Contarinia pyrivora, Riley, (pear gall midge) made in the Trentino, Italy. To obtain adults emerging from pupae in the soil, boards were placed on bricks laid on the ground, the spaces being walled up with earth. Lamp glasses, plugged at the upper ends, were placed over holes cut in the boards. Emergence occurs principally in the morning, and may be interrupted for several days by rain, cold, or wind.

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