L. minuticae is a new pest that damages wheat in recent years and occurs in Anhui, Henan, Jiangsu, Shandong and other places. Early cropping of wheat fields in some areas of Anhui Province has already occurred and should be prevented and treated as soon as possible.
L. maculosae is a diptate of the order Diptera. It is about 3 mm in length, yellowish-brown, shiny, and translucent and light dark brown. The larval body is milky white, verrucose and 3-3.5 mm long. , The body surface is smooth and soft. The larvae are mainly devoured by leaf blade. The female flies spawns the spawns with sparse ovipositors, leaves a row of pale brown pinhole spots on the upper half of the leaves resembling the lesions of the stripe rust, and gradually develops into yellow spots. After hatching, the larvae are harmed in the leaves of the wheat seedlings. The leafy flesh can be eaten. Only the transparent epidermis is left. The insect tract is wide. The latent marks are in the form of pockets with black worms. The damaged leaves are yellow or watery from the tips of the leaves to the middle of the leaves. Stains, which seriously cause the first half of wheat leaves to dry, affect photosynthesis and normal growth. Normally 2 generations occur each year, and mating eggs are spawned in mid-October. In mid-November, it is the first generation of larvae, and in the late 11th period, it is plentied into earthworms. It emerges in late February and late March. It is the second generation of larvae in mid-April. The period was also a time of great danger in the field, and the land was destroyed in early May.
Plants with a rate of 15% or more than 25 strains of pests should be treated with pesticides in time. Control adults, per acre with 80% dichlorvos emulsifiable concentrate 100 ml mixed fine soil 20 kg, or with 4.5% beta cypermethrin EC 30-50 ml water 25-30 kg spray. To control larvae, use 1.8% avermectin EC 10 ml or 48% chlorpyrifos EC 50 ml or 40% omethoate EC 80 ml 30-50 kg water spray at the initial stage of larvae.
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