Cotton cotton brown tape roll

The scientific name of Adoxophyes orana (Fischer Roslerstamm) is Lepidoptera. Alias ​​swiftlet, Far East brown stripe moth, tea scroll moth, cotton squid. Distributed throughout the country.

Hosts cotton, strawberries, beans, blackberries, raspberries, litchi, apples; pears, hawthorn, peach, plum, apricot, citrus and so on.

When the larvae damage the cotton seedlings, the spine sticks the two leaves together or snaps off the tender head to form a decapitated seedling. The true leaf is damaged, and the leaf margin is circulated to the front and the larvae feed on the leaves. The leaves do not form a trumpet, unlike the damage of the vine leaf blade. During the cotton bud stage, the larvae hung in the temporal lobe to bind the leaves to the feeding leaves, causing severe flower buds to fall off. The larvae injure the bells and gnaw on the surface of the bells.

Morphological characteristics Adult body length 6-8mm, wings 15-20mm, brown. The tentacles are filiform and the lower lip must protrude significantly. The forewings are slightly rectangular, and the base spots, mid bands and end lines are dark brown. The middle half of the middle band is narrow, the center is thin, and some individuals are interrupted. The rear half of the band is significantly wider or bifurcate than the first half. At the outer 1/3 of the trailing edge, the outer branch was stopped near the hip angle; the end lines were mostly "Y"-shaped, extending obliquely toward the middle of the outer edge; there were often several dark brown stripes on the wing surface; . The hind wings are yellowish-brownish grayish. The belly is light yellow and the back is dark. The egg is oval and has a diameter of about 0.7mm. It is translucent and yellowish. It is dark brown before hatching. The number of 10 pieces is arranged in squamas. The larvae are 13-18mm long, green and slender. The head is small, yellowish-white, and there are 1 tan spots above the monocular area. The chest shield and hip plate are similar to the body color or light yellow; the chest is yellowish or light brown. Hip 6-8 teeth. The young body is yellowish green.蛹 9-11mm, slender, after the first green turn yellow-brown. On the back of the abdominal segments, there are two transverse thorns on each of the 2-7 abdominal segments. The anterior thorns are thick, and the posteriors are small and dense, all of which are less than valves. There are 8 hook-shaped hip spines on the tail end, and they are bent to the ventral surface.

Habits of life The Yellow River's old course was 4 generations old, and in Liaoning and North China it took 3 generations. The young larvae in the gap covered the gap and lived in winter. When the germination begins, the larvae become young, buds, and young leaves, and the old leaves turn into pods. Flea period 6-9 days. The generation period of adults in each generation is generally: 3 generations: mid-late to late-July; mid-July to late August; and mid-late to late- September. The 4th-generation area: mid-to-late May; late June-early July; early and late August; and around mid-September. Adults live in a nocturnal cycle, have phototaxis, and have strong tropism towards fruit juices, fruit vinegar, and sweet and sour liquids. One to two days after emergence, they can lay eggs. Eggs are produced on foliar surfaces, but also on fruit surfaces and leaves. Each female can produce more than a hundred grains. Egg period 6-10 days. The newly hatched larvae are scattered in the leaf blades of the leaf dorsal and preceding larvae near the egg mass, and are slightly larger and can damage the fruit. The larvae are very lively, shaking the leaves and drastically twisting the body to droop. After the fall, the young larvae are overwintering. Natural enemies: Eggs have Trichogramma; larvae have Aphid, tarantula, and Beauveria.

Control methods (1) Release the bees during the occurrence of the peaks of the eye, and each bee is given 3 to 4 times in intervals of 5 days. (2) Remove the leaves in time. (3) The control of overwintering larvae during the flood season and the first generation of hatching of eggs is the critical period for pesticide application. 80% of dichlorvos EC or 40% omethoate EC, 25% ECS, 50% can be used. Fusong, 50% Malathion EC 1000x, 20% Chrysanthemum EC, 20% Chloramine EC 2000x, 2.5% Kung Fu or 2.5% Dichloramphenicol, 20% Dextrin Emulsion 3000 to 3500 times, 2.5% Uranus EC 4000 to 5000 times. Other pyrethroid insecticides or mixtures of chrysanthemum and organic phosphorus can also be used.