The scientific name Pegomyia hyosciami (Panzer) is known as Liriomyza leaffly. Diptera, flower fly family. It is distributed in the northeastern Songliao Plain, Hetao of Inner Mongolia, and the middle and lower reaches of the Yellow River.
Host beets and spinach.
The larvae are characterized by the larvae between the upper and lower epidermis of the leaves of the host, the leafy meat that is sneaked, and the residual epidermis, showing a white bubble shape, affecting the photosynthesis of sugar beet.
Morphological characteristics Adult body length 5-8mm, head semicircular, with a tan to dark brown frontal. The male and female fly eyes have a narrow frontal band and dark body color. The female's frontal band and abdomen are wider than the male. The fly has dark yellow wings and translucent yellow veins. The festival is full, the legs are yellow, and the money is black. Egg length 0.8mm, white, irregular hexagonal surface pattern. The last-instar larvae have a body length of 7.5-9mm, a long cylindrical shape, 13 sections, no feet, no obvious head, milky white to yellow-white. The front end has two triangular black hooks with 4-6 teeth. On the edge of the abdomen, there are 7 pairs of sarcomatoid protrusions, and there are also protrusions between the nodes. Cofferdam length 4.5-5mm, oval, reddish-brown to black.
Living habits Heilongjiang, Liaoning, and Inner Mongolia are 2-3 generations old, and live in the earth with quail. In the middle and late May of the following year, the adult is eclosed. The eggs are laid on the back of the beet, spinach or weed leaves in a row of 3-5 rows. In early June, they enter the spawning season. The egg period is 3-4 days or the temperature is low and the continuation to 18 - 2l days, 40-100 eggs per female. Newly-incubated larvae drilled into the leaves to eat food damage, in the middle of June into the larval damage. One generation is a serious hazard, and two to three generations are harmless. During 11-21 days of larval stage, the pupa was twice superficially to the back of the leaves or around the roots. Completion of a generation lasted 34-46 days.
Control methods (1) In the peak period of adult fly, spray 2.5% trichlorfon timely, 1.5-2kg per 667m2, or 800-90% crystal dipterex 800-900 times. (2) In the early stage of larvae hatching, 90% crystals of trichlorfon 800-900 times were sprayed. Or Dimethoate EC 800-1000 times, 48% Loxan (chlorpyrifos) EC 1500 times, 1.8% Abcam (Efortin) EC 2000 times, 10% Nicotine EC 1000 times, Prevention When the insects were to be decocted for 8 to 10 hours, the larvae began to move to the foliage, and the old larvae drilled from the insects were more favorable opportunities for spraying. When the density of insect population is large, it should be prevented 1 to 2 weeks later.
Benzaldehyde,Cinnamaldehyde
5-fluorouracil Solution,Fluorouracil Vs Imiquimod,Uracil Medication
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