The scientific name Leptinotarsa ​​decemlineata (Say) is from the order of Coleoptera, Phylloidea. It is a famous quarantine pest in the world. Originated in the United States, it was later introduced to France, the Netherlands, Switzerland, Germany, Spain, Portugal, Italy, Eastern Europe, and some countries in the Americas. It is an object of inspection in China. The hosts are mainly solanaceous plants. Most of them are of the genus Solanum. Among them, the cultivated potato is the most suitable host. In addition, it can also damage tomatoes, eggplants, peppers, and tobacco. If the population is out of control, the adults and larvae will injure the potato leaves and tender tips. They can eat up potato leaves, especially from the initial flowering period of potatoes to the formation of potato chips. They have the greatest impact on the yield and cause severe harvesting. Prevention and Control Methods (1) Strengthen quarantine, guard against human introduction, and eliminate it as soon as possible. (2) Rotation with non-host crops, planting early-maturing varieties, has a significant effect on controlling the density of the insects. (3) Biological control, and currently more commonly used is the spraying of 600 times liquid of B. t. tenebrionia subspecies. (4) Early spraying of insecticides such as chlorfenapyr, phosphoamine, and naphthalene, the insects are susceptible to insecticides and should be noted for rotation and alternate use. (5) Physical and mechanical control is performed using a vacuum worm and a propane flaming device. The propane arson device is used to control overwintering adult over 80% of seedlings.
The yellow mealworm is not only rich in protein, fat, polysaccharid and other organic macromolecular nutrients, but also rich in phosphorus, potassium, iron, sodium, aluminum and other trace elements. For every 100g of the yellow mealworm larvae, the protein content of dry powder is between 48% and 54%, the fat content is between 28% and 41%, and the contents of vitamin E, B1 and B2 are also high. Therefore, the yellow mealworm can provide high quality protein for the turtle, and make the turtle strong and health.
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Morphological characteristics Female adults 9-11mm in length, oval shape, the back of the bulge, the male is smaller than the female, the back is slightly flat, the body is yellow to orange, the head, chest, abdomen with black spots, the elytra wings have 5 black Pattern, head wider than long, with 3 spots. Eye kidney shaped black. The tentacles were eleven slender, up to the front and rear corners. The first section was thick and long. The second section was shorter than the three sections. The sections 1-6 were yellow and the sections 7-11 were black. There are more than 10 spots in the pronotum, two in the middle, four to five spots of varying size on each side, and four spots on each side of the abdomen. The eggs are about 2mm long, oval, yellow, and several rows of blocks. The larvae were dark red, and the abdomen swelled with hyperplasia, with six tumorous ocular eyes on each side of the head and one short antenna with three nodes. The antennae were slightly retractable.
Habits of the United States 2 generations of the United States, Europe, 1-3 generations, the adults in the soil depth of 7.6-12.7cm overwintering, late spring soil temperature 15 °C, the adults unearthed activities, the development of temperature 25-33 °C. Flying in the potato field begins with supplemental nutrition. The egg masses are produced on the back of the leaves. There are 20 to 60 eggs per egg mass. Spawning period is 2 months. Each female lays 400 eggs and the egg period is 5-7 days. The newly hatched larvae are taken. Leaf blade, larvae period of about 15-35 days, the fourth instar larvae eat 77% of the larvae eaten after the old mature, puerperium 7-10 days, after emergence of feathers continued to damage, rainy year light. This insect has strong adaptability. 