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Natural enemies of camphor
Alias: 樟 瘤 瘤 cluster 螟 螟, belong to Lepidoptera, 螟 moth family. Distribution and Hazards: The worms are widely distributed. Wherever there are toon plants are found, the main damage to the citron, pepper and so on. The hazards of larvae are very special, and the new shoots are often concatenated together. Together with silk and feces, they stick together and feed on the leaves. It looks like a nest. Morphological characteristics: Adults: 12 mm in length, 23 mm to 30 mm in wingspan, dark brown in fore wings, two wavy lines in the middle, brownish gray in hind wings, head and body in taupe. Eggs: brownish-yellow, concentrated in ichthyosis. Larvae: The old larvae are 20 to 23 mm in length, dark brown in color, and five deep brown longitudinal bands on the back. Dragonfly: 10 mm to 15 mm in length, brown, with abdominal cusp and hooked burrs.茧: 8 mm to 14 mm in length, 4 mm to 10 mm in width, flat oval, earthy or earthy brown. Occurrence pattern: This worm occurred in the Yangzhou area for 2 generations a year. The first generation is neat and the second generation has a few overlapping generations. From July to August larvae emerge at the same time. After the mid-September period, the mature larvae sloughed over the winter in the loose soil layer around the roots of the damaged citron. In the middle of May of the following year, adults were observed. After emergence, adults were cooped for 1 day to 2 days and spawned for about one week. Eggs are produced on the back of the leaves. See larvae after 7 days to 10 days. The newly hatched larvae feed on the egg shells, and the clusters endanger the feeding of leafy meat. At the age of two or three, the edge of the silkworm leaves are formed into 10 centimeters to 20 centimeters in size. There is a big difference in the age of insects in the same nest. There are 2 to 20 larvae per nest. Each nest contains between 3 and 10 leaves. The larvae reside deep within the nest. The nests are made of silk, insect feces, branches and leaves. The silkworms form the insect pathway and the larvae inhabit the insect pathway. At the time of the earthquake, they rushed out of their nests, dangling, or falling to escape. During the day, it is not moved and it is eaten in the evening. When the leaves of the nest edge are eaten, another new leaf is found to build the nest. From September to October, the larvae landed on the soil and wintered. Control methods: 1. During the active period of the larvae (from early July to mid-September), 1000 to 1200 times 90% of trichlorfon was sprayed in the evening, or 50% of malathion, or 80% of dichlorvos was used for control. 2. Manually remove the insect nest and concentrate it on burning. 3. The adult phototaxis was used to seduce the adult with a black light. 4. Winter fertilization combined with deep canopy soil under the canopy, red wax intercalated wax freeze-dried larvae in winter. 5. The larvae were initially sprayed with 500 to 800 times of moth (Bt). 6. Use and protect natural enemies. From May to mid-June, do not spray the medicine. Use the insect-sucking sand dug in winter and spring to collect the Fasciola maxima and place the natural enemies back into the trees.