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What are the morphological characteristics of the cotton scale?

The morphological characteristics of the adult female adult are long 5~7mm, oval, dark red or orange, with short black hairs on the back, covered with white wax powder, raised upward, and developed to secrete white oocysts at the end of the oviposition period. There are 14-16 longitudinal ridges on the oocysts, and the oocysts are covered with white granular wax powder. Antennae 11 nodes, dark brown.

The morphological characteristics of the scale: the female adult is 5mm long, oval, reddish brown, protruding on the back, with many black fine hairs; the back is covered with white wax powder, and the white waxy oocyst at the end of the abdomen is 4mm long, with 14 stripes.

The adult female adult is oval, orange-red and has short black hairs on the body surface. The back is covered with white wax powder. After maturation, white oocysts are formed behind them, and the oocysts are United into about 15 obvious longitudinal grooves. The male adult is thinner, with a length of 2 mm and a wingspan of 5 mm.

Adults: the female adults are 5~7mm, oval, orange or dark red, ridged on the back, short black hairs on the back, covered with white wax powder, and 2 pairs of abdominal valves. The female adults develop to the spawning stage and secrete white oocysts at the back of the abdomen.

Morphology (figure 4-9) figure 4-9 male adult antennae (enlarged) female adult (ventral view) egg first-instar nymph injured female adult oval, long 5-7mm, wide 4-5mm, orange or orange, abdomen flat, abaxially raised, showing tortoise shell shape, but raised higher in the center of the back.

What are the morphological characteristics of the cotton scale?

1. The nymph is red with yellowish wax powder on the back, 6 antennae and 4 long hairs at the end of the antennae, and 3 pairs of long hairs at the end of the abdomen. The back of the 2nd instar nymph is reddish brown, covered with yellow wax powder, the black hairs on the body surface are increased, and there are hair clusters, which can be divided into male and female; the male nymph is longer and more active. Reddish brown, covered with block wax powder and slender wax filaments.

2. The morphological characteristics of the scale: the female adult is 5mm long, oval, reddish brown, protruding on the back, with many black fine hairs; the back is covered with white wax powder, and the white waxy oocyst at the end of the abdomen is 4mm long, with 14 prominent stripes.

3. Adults: the female adults are 5~7mm, oval, orange or dark red, ridged on the back, short black hairs on the back, covered with white wax powder, 2 pairs of abdominal valves, the female adults develop to the spawning stage, secrete white oocysts at the back of the abdomen, and there are 14 ridges on the oocysts.

4. Morphology (figure 4-9) figure 4-9 male adult antennae (enlarged) female adult (ventral view) egg first instar nymph injured female adult oval, long 5-7mm, wide 4-5mm, orange or orange, abdomen flat, back raised, showing tortoise shell shape, while the center of the back rises higher.

5. Morphology (Fig. 4101) Fig. 4-101The newly hatched female adult larvae are about 5mm in length, 05mm in width, orange in color, wide oval in shape and flat in shape. The back of the body is covered with many pure white secretions, and there are 24 wax bands around the body.

What kind of pesticide is used to blow cotton scale?

④ chemical control. In the peak period of the first instar young scale, pesticides such as spray machine oil emulsion (oil content 2% 5%), turpentine mixture 10% 15 times, 48% Lesben EC 1000 times, 5% kungfu EC 3000 5 000 times were selected.

Action and application of nicotine matrine pesticides in citrus (1) ① pest control: nicotine matrine can be used to control citrus sagittal scale, blow cotton scale, black spot scale, brown round scale, red wax scale, rust wall louse, red spider (adult), four-spotted yellow spider, leaf miner, aphid and so on.

The control effect of% acephate 1500 × 2000 times on sagittal tip medium was more than 90% one month after spraying, which was mainly used for the prevention and treatment of young medium, and the control effect on adult medium was poor. Fourth, mineral oil.

The focus of the prevention and control of shell insects is to prevent them. The key is to clear the garden twice in winter, using stone-sulfur mixture once in winter, spraying mineral oil once before sprouting after spring, and then removing withered branches and leaves with eggs.

There are cotton scale insects in the flowering period of jujube trees? What kind of medicine does not affect Xiehua and fruit drop?

Killing phosphorus and killing quickly refers to the same pesticide, and the effect is not very good. For example, the mulberry white ball scale is relatively bad, and the spraying concentration should be more than 500 times. In general, the effect of stone-sulfur mixture will be better.

The purpose of pre-anthesis prevention is to ensure the safety of flowering, grape flowering is a relatively fragile period, so we must do a good job of prevention, at the same time need to supplement zinc and boron to prepare for grape fruit setting. Use carbendazim, thiophanate methyl, etc. At this time, fluid boron needs to be added and zinc needs to be replenished.

During the transfer period of newly hatched nymphs, Bika potassium dihydrogen phosphate plus 1000 times of omethoate may be sprayed, or 1000 times of 50% fenitrothion, or 400,600 times of ordinary washing powder, sprayed every 2 weeks or so.

Who knows what kind of bug it is? it was found on the banyan tree beside the school road. there was white on the branch at that time.

The main results are as follows: 1. It is one of the scale insects. The scale insect is a pest of Homoptera (Homoptera), whose scientific name is Icerya purchasi, which is distributed worldwide. The male adult is 3 mm long and the wing is 3-5 mm long.

2. Scale insects. Artificial control: in the process of cultivating flowers, it is found that there are shell insects in individual branches or leaves, which can be gently brushed off with a soft brush, or combined with pruning to cut off insect branches and leaves. It is required to brush clean, cut clean, focus on burning, do not throw. Chemical control: according to the occurrence of shell insects, spray in the peak period of nymphs.

3. It may be bark beetles, belonging to the family Coleoptera, which often occurs in the process of crop production. If this bug is found in the living environment, you can consider using diatomite.

4. It was found for the first time in Liaoning Province, and it was reported in Xi'an in 1985. Since 1999, this pest has been harmed in Tangshan and its surrounding areas, and it has been controlled as a main pest.

5. From the point of view of appearance, this should be Kang's pink scale, which is a common and harmful shell insect in garden plants, and it is a kind of insect of the genus Pyrus, also known as pear pink scale, plum powder scale, mulberry powder scale and so on.

Biological talent to help identify what kind of bug this is.

Blow cotton scale, also known as citrus scale insects. The woolly scale belongs to the family Homoptera of Insecta, commonly known as scale insects. This bad thing lies all his life on trees (mainly citrus, acacia and willow), sucking sap, yellowing and withering the leaves, causing fallen leaves, falling fruit, and even the death of the whole tree.

Red fire ant is one of the most destructive invasive creatures listed by the World Conservation Union (IUCN). It is an agricultural and medical pest originating from South America.

It's a fruit fly. The body of the fruit fly is small and small, the head is spherical, the middle chest is well developed, and the wings are spotted.

Stink bugs, the scientific name is "stink bugs", also known as "bugs", Pentatomidae, bedbugs, fart after the opening of stinky glands, when the enemy gives off a stench. It is widely distributed in Henan, Shandong, Hebei, Anhui and other areas, especially in summer.

Ciji, is a kind of insect of the genus Coleoptera, Coleoptera. Cihu is generally fond of nocturnal activities and is often hidden under soil, rocks, dead branches and rubbish during the day. The glandular pleats in the 4th section of the abdomen of the cilium can secrete a special stench to ward off the enemy.

This is a tick. Also known as tick, soft-shelled turtle to eat, commonly known as dog soft-shelled turtle, grass biezi, cattle lice, grass tick, dog beans, cow turtle. In Sichuan dialect, it is called coercion (pronunciation shà) and so on. Dormant on the grass and plants in the shallow mountains and hills, or lodging among the skins of animals such as livestock.