Peach fruit borer, Carposina nipponensis, insects of Lepidoptera ( Lepidoptera ) fruit moth family ( Carposini-dae ), also known as the peach fruit moth. Fruit pests. Harm peach, pear, jujube, hawthorn and other bonus.
Peach fruit borer body gray or grayish brown, the body length from 5 to 8 mm, the exhibition wings from 16 to 18 mm, females slightly smaller front; forewing has a central black triangular spot, wing base and central 7 clusters of yellow brown or blue brown oblique scaly hairs; hind wing white; egg oval, dark red color; the larval body length 13 ~ 16 mm, pink; pupal length 6.5 ~ 8.6 mm, yellowish brown. Overwintering chrysalis flat oval, close texture; pupa cocoon and fusiform, osteoporosis.
Walsingham located in three provinces in Northeast China, Hebei, Henan, Shandong, Anhui, Jiangsu, Shanxi, Shaanxi, Gansu, Qinghai and Xinjiang area fruit, also found in Japan, Korea and russia. In the north of China from 1 to 2 years. The larvae in shallow soil around the trunk of cocoon overwintering, 3 cm deep in the soil around the bug number. Next spring average temperature is around 16 ℃, the temperature of about 19℃excavations started in lumps, or other objects with a cocoon for pupation. 6 ～ between July adult large eclosion, nocturnal, phototaxis and chemotaxis are not obvious. In late June to spawn in apple, pear calyx and jujube stem depression. Primary larva in the first surface of fruit peel crawl bite, but does not swallow, then bore into the flesh and string food. Wormhole Pilve subsidence around fruit, fruit surface dents. From 7 to August first generation larvae stage in late August, mature larvae pupate, cocoon, 8 ～10 occurred early in second generation. Year 1 generation area, shedding larvae then winter diapause, node hibernating cocoon. Medium, late-mature breed harvest time is still part of larvae in fruit, with the fruit into the storage site.
Recommended prevention method: in the egg fruit rate reached 1% or egg hatching period, each with 10000000000 /ml 667m2 spores Empedobacter brevis suspending agent from 80 to 100 ml versus 45 kg water spray mist. |
