* * how to control cotton stem wood sac moth?

* * how to control cotton stem wood sac moth? The scientific name is Zeuzera coffeae Nietner, Lepidoptera, Lepidoptera. Alias coffee beetle moth, coffee leopard bark moth, leopard bark moth, coffee black spot bark moth. It is distributed in the east and south of China, and mainly harms cotton and trees in Shanghai and Taiwan. Host cotton, tea, mulberry, jute, castor, coffee, litchi, longan, citrus, pear, persimmon, batch, peach, grape, jujube and so on. In order to damage mulberry, tea and fruit trees, the larvae eat the xylem of branches and stems, bite a row of fecal holes at a certain distance, and mostly eat upward along the pith, resulting in branch collapse or wilt. the morphological characteristics of adults are 11-26mm in length and 30-50mm in wingspan. The male is smaller than the female and the body is gray-white. The female antennae are filiform, the male base is half-pinnate, and the end is filiform, all black and covered with white scales. There are 6 bluish blue spots on the chest and back in 2 longitudinal rows, 3 bluish blue longitudinal striations in each dorsal part of the abdomen, 1 blue spot on each side and 3 homochromatic spots on the ventral side. The veins of the anterior and posterior wings are densely covered with blue short oblique stripes, and the ends of the outer veins are speckled. The spots on the hind wings are lighter. There is a large blue round spot in the middle of the female hind wing. The egg is oval, long lmm, beige to brown. The larvae are 20-35mm in length, red, yellowish brown or light reddish brown in the head, yellowish brown to black in the forechest shield, 4 rows of comb-shaped teeth near the center of the posterior margin, double sequence rings of ventral toe hooks and dark brown buttocks. The pupa is 16-27mm long, brown and glossy, with 2 transverse eminence on the back of the 2nd-7th ventral segment and 6 pairs of spines at the end of the abdomen. The living habits are 1 generation in Shanghai and Yangtze River valley, 2 generations in Jiangxi and Taiwan, all overwintering as larvae in the stems of many kinds of trees such as cotton, wood mold and peach trees. Shanghai pupated in the first and middle of June, Eclosion in the middle and last ten days of June, laid eggs on cotton leaves, and the newly hatched larvae bored cotton petioles or twigs. When the larvae were slightly larger, they turned to coarse branches or main stems, destroying cotton water supply. The victimized larvae of tea, mulberry and fruit trees ate upward along the pith. In the second generation area, Jiangxi pupated from mid-April to late June, and the pupation period was 13-37 days, and from mid-May to mid-July. The adults are phototactic, mating and spawning soon after Eclosion, and the eggs are laid in pieces in skin sutures and pores. The oviposition period is 1-4 days, the number of eggs per female is 2 24-1132, the average life span of adults is 43 days, and the egg period is 9-15 days. The newly hatched larvae clustered on the egg block to feed on the egg shell. 2-3 days later, they climbed to the top of the branch and spun and drooped with the wind. The larva ate from the axil of the bud above the shoot and withered above it. After 7 days of 5Mel, the thicker branches were damaged again, and the upper part was mostly withered because of the lateral ring under the skin for 1 week, then the upper part was eaten upward in the xylem, and then the Eclosion hole was built in the tunnel after ripening, and the Eclosion hole was extended from the head and chest during Eclosion, and the pupae shell remained at the hole. The first generation adults occurred from August to September, and the second generation larvae overwintered in the damaged branch tunnel after autumn. The natural enemies are cocoon wasp and Fusarium moniliforme. Control methods (1) cotton field combined with the control of other pests to centrally treat or burn cotton straw as early as possible to reduce the overwintering larvae in the stem. (2) when sawdust feces are found around damaged wood molds, fruit trees and other host trees, cut off insect branches and burn them in time to prevent them from entering the cotton field after Eclosion to lay eggs. (3) when the cotton plant is damaged, peel off the cotton stem and kill the larvae. (4) when tea, mulberry and fruit trees are injured, the injured branches are cut off in time, burned or buried deeply, and can be controlled after 1-2 years. (5) during the peak period of adults, other pests were sprayed with 2000 times of parathion EC or 1000 times of 10% bromma EC, 1500 times of 20% Chrysanthemum EC, 2000 times of 20% chloroma EC, 3000 times of 2.5% Kung Fu EC, 1500 times of 21% Kung Fu EC, 2500 times of 30% Peach Xiaoling EC and 1500 times of 2.5% Uranus EC. Click to get massive cotton planting technology click to get massive grain and oil crop planting technology