1. Grey planthopper
Nickname: Worm. The dorsal plate of the crown and forebrea is yellow, the female is pale yellow in the middle, dark brown on the sides, and the forewings are nearly transparent and have wing spots. The thorax and abdomen of the ventral surface of the male are black brown, the female is yellowish brown, and the feet are pale brown. The terrible thing about it is that poisoning can lead to rough shrinkage.
The hazard picture is as follows:
Hazard insects are determined according to the symptoms of harm.
Weakness: Low temperature resistance is not high temperature resistance.
Cracking: remove weeds, protect natural enemies, imidacloprid, pyadone, veratine and other agents to spray prevention.
2. Red spider
Nickname: Fire Spider. Adult mites are oval in color or rust red in females and spherical in ovoids in males. The juvenile mites are nearly round and transparent in color and red in 3 pairs of feet after feeding. Suck the juice from the back of the leaf.
Weaknesses: Drought and flooding, slow movement.
Cracking: clear weeds to break their channels; Spray, fumigation rotation.
3: Aphids
Nickname: Ten Thousand People. Wingless parthenogen aphids are dark green and covered with thin white powder; Winged parthenogens have a head , a bright black breast , and a yellowish red to dark green belly. Harmful to heart lobes and male spikes. It's dirty.
Weakness: Lustful and light-seeking, favorite yellow.
Cracking: Potion seed mixing, rotation spray elimination.
4: Thrips
Nickname: Lone Female. Female adults are long-winged, semi-long-winged, and short-winged, and the nymphs are creamy blue or milky yellow in color, and the body surface is wrinkled with transverse ridged uplift particles. It can fly and jump, causing corn seedlings to "break heart leaves" or twist into "cow's tail shape".
Weaknesses: Like dry and afraid of moisture, adults are slow to move.
Cracking: imidacloprid, acetamidine and other systemic agents have a good prevention effect, do not use permethrin pesticides.
5) Cotton bollworm
Nickname: Green Worm. The larvae are 40 to 45 mm long, the head is yellow-brown, and can be divided into 9 types according to body color, such as yellow-white type, yellow-red type, gray-brown type, earth yellow type, light red type, green type, black-brown type, coffee-colored type, and green-brown type. Feeds on filigree, male spikes, female spikes, and leafy young tissues.
Weaknesses: Adults have phototropism and are also very luminous to semi-withered poplar branches.
Cracking: black lights, sex attractants or poplar branches to trap adult insects; During the peak of the egg period, the eggs release red-eyed wasps or grasshoppers or spray nuclear polyhedraviruses or chemical control.
6) Corn borer
Nickname: Drill Heartworm. The old mature larvae are 20 to 30 mm long and the head shell is brownish black, the body is stained white, and the dorsal hair patch is obvious. The larvae burrow into the heart leaf and nibble on the leaf flesh, leaving only the epidermis.
Weakness: Adults are diurnal and nocturnal, and have phototropism. Adults lay their eggs near the midrib of the dorsal back of the corn leaf.
Cracking: Light traps adult insects, white zombie bacteria, Thuringiensis (Bt), red-eyed bees with substances, octyl thion granules or sprays to kill.
7) Golden needle worm
Nickname: Kowtow. The larvae are slender, golden or tea-brown with shiny hairs of the same color, hence the name "Golden Needle Worm".
Weakness: Adults tend to decaying grasses. Hiding during the day and nocturnal activities, female adults can not fly, slow movement has suspended death, no phototropism, and males fly stronger. The larvae are harmful to the roots, stem bases, and feed on organic matter.
Cracking: octyl thion, chlorpyrifos, maggots and other seeds, poisonous soil, irrigation roots, and chimney sulfonone preparation before and after the interval of one week before and after the application.
8: Ground Tiger
Nickname: Root-cutting worm. The head is yellowish brown, the forehead is bimodal, and the body is pale yellowish brown to dark brown. Linear stripes on the back. Leaves are left to eat, moths are left to be silky, and cruelty is young.
Weaknesses: Adults have phototropism and chemotaxis, and the larvae are infested on the surface before the third instar, and after the third instar, they enter the soil and lie diurnally and nocturnally. Self-injuriousness.
Cracking: black light, sweet and sour liquid to trap adult insects; Spraying, spraying powder, poisonous soil and bait before the third instar to annihilate the larvae; After older age, the roots are suffocated.
9: Double-spotted fluorescent leaf beetle
Nickname: Filariasis. The head and thorax are reddish brown, the base half of the elytra is black, the base is pale yellow, the surrounding area is black, and the end of the elytra is half yellow. Can fly and jump, has a group, migration. The fierce means is the filament addiction, resulting in corn extinction.
Weaknesses: young leaf habits, like high temperature and dry noon activity is strong, morning and evening activity is poor.
Cracking: 9 to 11 a.m. and 16 to 19 p.m., pyrethroid pesticide spray control rule.
10: Two o'clock nocturnal moth
Nickname: Stowaway. The head is brown, the forehead is dark brown, and the back of the abdomen is tattooed with two brown lines. Smaller than the size of the tiger, foreign countries have smuggled in recent years, good at cutting roots, moths, and disguised tigers to commit crimes, in order to harm seedlings.
Weaknesses: Adults tend to light, chemotactic, diurnal and nocturnal.
Cracking: Black light booby-traps adults; Qingtian destroyed the hidden environment, sprinkled poisonous soil, sprayed chlorine benzamide, permethrin, methyl salt, and indate to kill the larvae.
11: Armyworm
Nickname: Marching worm, red head, flat forehead, eight characters. The body color varies from light green to dark brown with the increase of members, and he is good at continuous combat, and the corn field can be turned into a bamboo forest in two or three days. Mostly with wind or rain airborne raids.
Weaknesses: Adults tend to light, chemotaxis.
Cracking: It can use sweet and sour liquid, sex traps, insecticidal lamps and other control techniques to trap adult insects, and use sprays such as high chlorine or smoke to surround the larvae. Or use DuPont Broad Spray for prevention.
12. Grubs. The harm at the seedling stage is serious, especially the stubble is peanut.
13. Beet nocturnal moth.
Beet armyworm (Beet armyworm) scientific name Spodoptera exigua (Hübner, 1808), commonly known as cabbage brown night moth, belongs to the order Lepidoptera, noctuidae, is a worldwide distribution, intermittent occurrence of large-scale endangering vegetables mainly omnivorous pests. It is harmful to green onions, kale, Chinese cabbage, celery, cauliflower, carrots, asparagus, spinach, amaranth, peppers, cowpeas, cauliflower, eggplant, kale, tomatoes, cabbage hearts, cabbage, broccoli, spinach, radish and other vegetables.
Beet moths are harmful to a variety of vegetables, such as green onions, kale, cauliflower, cabbage, radish, lettuce, tomato, green pepper, eggplant, potato, cucumber, zucchini, beans, fennel, leeks, spinach, celery, carrots and so on.
The corn beet nocturnal moth is also known as the beet nocturnal moth and the corn leaf nocturnal moth. It belongs to Lepidoptera, Noctiaceae. It mainly parasitizes more than 170 kinds of plants such as corn, cotton, sugar beet, sesame, peanuts, tobacco, soybeans, cabbage, tomatoes and so on.
For the characteristics of the pest, the larvae eat leaves into missing or holes, and seriously eat the leaves, leaving only the petioles and veins, which have a great impact on the yield.
Morphological characteristics, living habits, control methods See Beet nocturnal moth.
The identification of male and female (male and female) of the beet nocturnal moth is described in the next part.
14. Snails. It happens severely every day when there is a lot of rain.
15, 13, 28 Star Ladybug, etc.
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Harmonia dimidiata (Fabricius, 1781)
Little thirteen star ladybugs
( Ladybird family / Ladybird subfamily) 6 - 9.5 mm in length, the dorsal plate of the forebreast has 2 black spots, the spots are connected, the small shield plate is black, the elytra are orange-red, and there are 13 small black spots on the left and right wings, one of which is pear-shaped at the junction at the end of the wing. This species, also known as red-shouldered ladybird, is distributed in low- and medium-altitude mountainous areas on flat land, adults and larvae prey on aphids, a small number of individuals will light up at night, and in the winter some groups will collectively spend the winter, and there is still a chance to see adult insects in warm sunlight. There are still mutants of this species, but they are rarely seen in Taiwan, and normal individuals are very common. Although the name is called "small" thirteen-star ladybug, it is actually very large, and the same thirteen-star ladybug also has a kind of ladybug called the big thirteen-star ladybug, which is larger. There are 6 species in this genus, of which the point strip and ladybird Hamonia shoichii are rare, and there are no ecological photos on the Internet.
The small thirteen-star ladybug, perched on a green light and shadow background, looks very dreamy.
A small thirteen-star ladybird with a dark mountain-like spot in the center of the posterior edge of the dorsal plate of the front chest.
The small thirteen-star ladybug can overwinter in the form of an adult insect and is the most easily seen ladybug in the cold season.
Small thirteen-star ladybug with an orange-yellow ventral surface.
The little thirteen-star ladybug, the egg, is broken by the aphid's soldier aphid, which is a mechanism for aphids to resist enemies.
Small thirteen-star ladybirds, eggs, attached to the environment in which aphids grow.
A small thirteen-star ladybird, the larvae have a black back and a large orange-yellow spot in the center, which is black inside the spot.
The small thirteen-star ladybird gradually shrinks in size during the pupal stage.
The small thirteen-star ladybird pupae are orange-yellow with dark spots arranged longitudinally between the left and right nodes.
Little thirteen-star ladybird (pupae)
Small thirteen-star ladybug, ready to feather.
Differences from grasshopper larvae: