What are the species of beetles? Attached picture

Beetle is a common insect with strong adaptability and wide distribution. it is a kind of pest that harms apple tree, grapevine, peach tree, mulberry and willow. What are the species of beetles? How to prevent beetles from harming crops? A picture is attached.

What are the species of beetles?

1. Double-forked rhinoceros beetle

The double-forked rhinoceros beetle is 32.4-95.6 mm long and 18-38 mm wide, with a long oval shape and a very arched ridge. The chestnut body is brown to dark brown, the head is small, and the antennae have 10 segments, of which the Gill is composed of 3 segments. There is a double bifurcated horn process on the top end of the male head, and a bifurcated horn process in the center of the forechest dorsal plate, and the back is relatively smooth. The female is slightly smaller and has no horn process on the head and chest, but there are 3 transverse processes in the central protuberance of the head and face. there is a T-shaped groove in the middle of the anterior part of the anterior thoracic dorsal plate, and the back is relatively dark. The three pairs are long, powerful and powerful, with a pair of claws at the end, which is a powerful tool for climbing.

2. North Korean black beetle

The adult of Korean black beetle is 20mm in length and 8mm in width. Dark brown, glossy, black-brown sheath wings, where the two sheath wings meet, there are three longitudinal uplift lines on each sheath wing. The male worm is depressed in the middle of the ventral surface of the distal segment, and there is a deep transverse groove in front of it, while the female worm is raised in the middle, and the transverse sulcus is not obvious.

3. Copper green beetle

The adult of the copper beetle is 18-21 mm long and 8-10 mm wide. The back is copper-green and glossy, with yellow on both sides of the front chest and back. The sheath wing has maroon reflection and 3 longitudinal protuberances. The ventral surface of the male worm is dark brown and the ventral surface of the female worm is yellowish brown. The eggs are round and milky white. The larva is called dregs, milky white, fat, and bent to the ventral side into a "C" shape, with 3 pairs of chest feet and brown head.

4. Dark beetles

The dark beetle adult is 18mm long and 8mm wide, dark brown and dull. There are three longitudinal uplift lines on the sheath wing. There are short blue-gray villi on the wing and abdomen, and four inconspicuous longitudinal lines on the sheath wing. It is very similar to the Korean black beetle because of its color and shape, which is not easy to distinguish, but the difference is that the adult is dark brown and has no luster, the abdominal gluteal plate is not semilunar, and the dividing line between the abdominal segment and the central part of the Internode is obvious. The anus of the larva opens at the end of the abdomen. Life habits are roughly the same as North Korean black beetles. Only the adult appeared later.

Second, how to prevent beetles from harming crops?

The beetle has the characteristics of clustering, false death and phototaxis, and the harm is the most obvious in the muggy and windless night. Using their phototaxis, black light or 60W light bulbs can be installed in conditional orchards, and the trapping effect is remarkable. With black and green single-tube double lights, the trapping and killing of beetles can be about 10% higher than that of black lights; they can also be used to shake branches in the morning or evening, shock the beetles under the tree plate, and spray the beetles with a knapsack sprayer at the fake dead beetles. Making use of the habit of adults entering the soil, spraying pesticides on the ground during the occurrence period of adults can be sprayed with 48% chlorpyrifos EC 300 ~ 500 times, or 50% phoxim EC 300 ~ 500 times, to wet the surface of the soil, which can effectively kill it.

In addition, some fruit growers suggested that they could be trapped and killed with sugar and vinegar. The preparation of sugar and vinegar should be mixed with spirits, brown sugar, vinegar and water according to 1, 1, 4, 16, add a small amount of chlorpyrifos insecticide, mix it evenly with a stick, and then pack it into shaved glass cans or similar open containers and hang them in the orchard or near the edge of the cornfield, hanging 5 to 10 per mu. Often check the trapping situation, fish out the insect body in the bottle, according to the species of trapped pests, you can also predict the occurrence and control of pests.