This is the "long-footed bamboo elephant"
Long-footed bamboo elephant, also known as the bamboo transverse cone elephant, is now known as long-footed bamboo elephant, Cyrtotrachelus buqueti Guer, weevils of the family Cone Elephant Beetle genus of a kind of insects.
Distributed in China's Guangdong, Guangxi, Jiangsu, Fujian, Sichuan, Guizhou and other regions of Southeast Asia, such as Vietnam, Laos, Myanmar, Thailand .
I. Harm
Harming bamboo, bamboo, green bamboo, Yazhou bamboo, bamboo, bamboo, bamboo, bamboo, bamboo, bamboo, bamboo, bamboo, bamboo, bamboo, bamboo, bamboo, bamboo, bamboo, bamboo. Adults and larvae feed on bamboo shoots, resulting in a large number of retreating bamboo shoots, broken bamboo and deformed bamboo. The general rate of infestation is more than 10-20%, and if mixed with bamboo straight cone elephants, the rate of infestation can reach more than 90% in serious cases.
Two, biological characteristics
One generation a year, to adult insects in the soil pupa room overwintering. Adults emerge in late May and early June of the following year, with August being the peak season for emergence, and the emergence time in a day is mostly 6-9 and 16-19 hours. When the adults first emerge from the ground, they move slowly, and after one or two days, they bite the flesh of bamboo shoots as supplementary nutrition. Adult activity time is mostly 8-12, 15-18 hours, at noon and rainy days hidden in the back of the leaves or weeds under the leaves, after the rain cleared the day the most active. Adults have a pseudo-death, vibration is falling to the ground, the abdomen up, after a few moments and then climbed away, there are a few adults, in the fall on the way that the wings fly away. The adult life span is 50-70 days. Adults are extinct in bamboo forests in early October.
Adults are supplemented with nutrients for 2 days, then they will cross over. When the tail, the female adult more in the bamboo shoots to feed, the male adult fly in its side of the body to rest for a moment, and then tail, there are also several male adults compete with a female tail. Both male and female adults can cross their tails several times. Crossing immediately after spawning, spawning first seek the diameter of more than 2 cm thick bamboo shoots, in which part of the peck a spawning holes, holes in the appearance of near-round, with fibers exposed, within an oval hole of 3 × 5 mm, deep into the flesh of the bamboo shoots, the deepest can be up to 10 mm. Each hole spawns 1 egg, up to a bamboo shoot can spawn 3 eggs, female spawning period of up to half a month, *** spawn 35-40 eggs. Eggs hatch in 3-4 days, and before hatching, two small red spots are visible at one end. After the larvae hatch, they feed upward, and after 1-3 days, a greenish-colored liquid comes out from the egg-laying hole, and a black liquid comes out in 3-4 days. Larvae upward feeding route for the "Z" shape, until the tip of the bamboo shoots, and then downward feeding, the bamboo shoots on the upper part of the bamboo shoot flesh eaten up, a larva can eat food bamboo shoots 20 a 30 centimeters long, the infested bamboo shoots can not become bamboo. Larvae in the bamboo shoots in 9-14 days after the old mature, mature larvae are in the morning in the middle of the bamboo shoots will bamboo shoots bite into a diameter of about 8 millimeters of round holes, climb out of the ground, rolling along the slope, if blocked that is to crawl, the larvae crawl quickly, looking for the right place into the soil, into the soil to jaws loose soil and drilling downward with the head, the remaining soil in the earth into the pile of the ground in a circle, and from the ground to pull in some of the weeds and leaf fragments, and the earth into the earth room, the shallow one is only The shallow one is only 9 centimeters, and the deep one can be up to 63 centimeters, usually 20-30 centimeters. Larvae 3-11 days to pupate, pupal stage ll a 15 days.
Three, prevention and control
1, physical control
The bamboo forests split the mountain and loosen the soil, destroying the overwintering soil cocoon, not only can reduce the number of sources of insects in the coming year, but also enhance the plant growth, reduce the damage; can also be in the adult period of the adult, the use of pseudo death, vibration drop capture.
2, pharmaceutical control
Forests found in the insect damage, available 40% oxidized lemonade or waste engine oil coated in bamboo culm or bamboo shoots shells, to prevent harm on the tree.
Four, ecological trap control
First of all, in the bamboo forest to choose a good not windy but more sunny bamboo clumps, and secondly, the equipment will be placed in the bamboo clumps in the middle and around the height of about 1 meter. In this way, the bamboo elephant flies up in the bamboo bush, other bamboo bush bamboo elephant fly, will be captured by the trap, so can no longer lay eggs harm bamboo shoots, to achieve the purpose of pollution-free control of the bamboo elephant, not only to protect the bamboo shoots on the forest but also to maintain the quality of the ecological environment.
Five, edible
Although it is a pest, but it is not useless. Many children also specialize in catching as a toy, if you catch it, remove a section of the foot, with a small bamboo stick to wear up, baked and eat or a rare gourmet it! However, these are not comparable to its medicinal value, some of the old man suffering from rheumatism, put it into the boiling water after scalding, drying it to soak it in wine, as long as you drink a small cup every day, you can relieve years of rheumatism pain. Therefore, in summer people to the bamboo forest when wandering, often catch some bamboo elephant bugs to take home, there are barbecue to eat, but also to dry it after the storage of the spare.
Sixth, note: you can only eat live, medicine dead absolutely can not eat, beware of pesticide poisoning!