What do citrus butterfly adults eat, and are citrus butterfly larvae poisonous?

The adult of the citrus butterfly is the butterfly, and when it breaks out of the chrysalis at the end of its life, it just feeds on the nectar, then produces seeds, and finally ends its life before the cold winter comes.

Like all citrus plants, it is very attractive to the caterpillars of the butterfly. I don't take care of it very carefully, and sometimes the insects have grown quite big, only to find out, clean up. This worm that slipped through the net, when I found it,

You're talking about butterflies, right, LZ. It is better to release it, so that it will fly freely in nature, in the lawn, in the flowers, and suck the nectar freely.

No poison.

The larvae of the orange butterfly do not bite, like to eat citrus and pepper leaves, do not eat the same pomelo leaves of the genus Spice, the larvae are about 45mm long, and mainly live in the Yangtze River basin and the north of the region.

There are two types of citrus butterflies: spring and summer. The spring type is 21-24 mm long, and the wingspan is 69-75 mm; The summer shape is 27-3 mm long and has a wingspan of 91-15 mm. The female is slightly larger than the male, the color is not as bright as the male, the markings on the wings of the two types are similar, the body is pale yellow-green to dark yellow, there is a black longitudinal band in the middle of the dorsal body, and the sides are yellowish-white.

<>The larvae of citrus butterflies feed on orange leaves and pepper leaves, and after feathering, they feed on nectar, dew, and rotten fruits.

Adults like to eat nectar, are good at flying, are mostly active from noon to dusk, and will lay eggs on the back of the leaves after mating during the day.

After hatching, the larvae will harm the young shoots, young leaves, and adult leaves, and can feed on 5-6 leaves in their lifetime, and will release odors to avoid predators when frightened.

When the larvae are mature, they will spin silk and wrap around the chest and abdomen to form a band, and wrap themselves on branches and other materials to pupate and overwinter.

1. Habits

1. Adults are good at flying, like to eat nectar, generally active before noon to dusk, and will lay eggs on the back of young leaves or leaf tips after mating during the day, and the egg period is about 7 days.

2. After hatching, the larvae first eat the egg shell, and then harm the young shoots, young leaves, and adult leaves, and can eat 5-6 leaves in their lifetime. When frightened, the larvae will protrude from the anterior edge of the prothorax with orange-yellow fleshy horns, releasing a strong odor to ward off predators.

3. The larvae have a total of 5 instars, and after they are mature, they mostly spin silk in hidden places as pads, grasp the silk pads with hip toe hooks, and then spin silk around the chest and abdomen into a belt, and wrap them on branches and other things to pupate (this pupa is called a pupa callis) for wintering.

3-6 generations can occur in a year, and the field generations overlap, and the spring adult emerges from March to April, and the summer adult emerges from July to August. The natural enemies of the pupal stage include the large legged wasp, the butterfly and the golden wasp.

Second, algebra occurs

1. In the Yangtze River basin and the areas north of it, 3 generations can occur in 1 year; Jiangxi Province, 4 generations can occur in 1 year; Fujian Province and Taiwan Province can occur 6 generations in 1 year. The pupae overwinter in hidden places such as branches and leaf backs.

2. In the Huangyan area of Zhejiang Province, the occurrence period of each generation of adults is the overwintering generation from May to June, the first generation occurs in July to August, and the second generation occurs from September to October, and the third generation of pupae overwinters.

3. The occurrence period of adults of each generation in Guangdong: the overwintering generation occurs in March and April, the first generation occurs in late April to May, the second generation occurs in late May to June, the third generation occurs in late June to July, the fourth generation occurs in August to September, and the fifth generation occurs in October and November, and overwinters with the sixth generation of pupa.

3. Habitat environment

Adults generally inhabit open areas, suburban gardens, urban parks, sparsely wooded forests, citrus plantations, and are vertically active at an altitude of about 1000 meters, and the Taiwan subspecies can inhabit up to 2500 meters above sea level.

Citrus butterfly larvae are not poisonous. The larvae of citrus butterfly are very harmful, which directly affects the quality and yield of citrus and peppercorns. In agricultural production, it is necessary to master the control methods of citrus butterfly larvae, such as manual killing in a small area, large-scale introduction of natural enemies, and can also be controlled by pesticides, and prevention must be strengthened, which should be paid attention to.

In fact, citrus butterfly larvae are not poisonous. It likes to eat citrus and pepper leaves. But don't eat the same spicy grapefruit leaves, so it's non-toxic.

Butterfly larvae die (pictured).

Harm of citrus butterfly larvae.

Citrus butterfly larvae are very harmful to the leaves of citrus, pepper and other plants. If the insect pest occurs on a large scale, it will directly affect the quality and yield of citrus and peppercorns.

Butterfly larvae like to eat citrus and pepper leaves, and the larvae first eat egg shells after hatching. The first instar larvae first feed on the edge of the young leaves, and when they grow up, they begin to feed on the center of the leaves, and only the last leaves are left to grasp the manuscript veins, and even the leaf veins will be eaten up when they are severe.

When the larvae are frightened, they stick out their stinky horns and emit an unpleasant smell to ward off predators. After aging, it will spin silk as a cushion head, and pupate obliquely in the air.

This brings serious harm to citrus trees, affecting the growth of citrus seedlings, young trees, and the formation of tree crowns.

Especially in citrus nurseries and young citrus orchards, the harm is particularly serious; As well as citrus producing areas and mountain citrus orchards with mixed cultivation of multiple varieties, the larvae of butterflies will be particularly harmful due to the fact that the growth period of fruit trees of each variety is not exactly the same.

Citrus butterfly larval control methods.

1. Artificial hunting

This method is suitable for small insect infestations.

2. Attract natural enemies

The natural enemies of citrus butterfly larvae include butterfly, golden wasp and broad-legged wasp. In order to protect predators, the pupae can be placed in a sarong and placed in the garden. The host wasp emerges and flies out to parasitize.

3. Pharmaceutical prevention and control

It can be used 1000-2000 times per gram of 30 billion celery bark silverspore green worm fungus powder. or 1500 times of 40% enemy and horse syrup emulsifiable concentrate, and 1000-1500 times of 40% chrysanthemum emulsifiable concentrate. 90% trichlorfon crystals 800-1000 times.

10% bromo-horse emulsifiable concentrate 2000 times. 80% dichlorvos or 50% pine borer. or 1000-1500 times of 45% malathion emulsifiable concentrate and spray at the larval stage.

Citrus butterfly is a pest, it will parasitize on citrus, pepper, pineapple and other plants, can harm the young leaves and new shoots of the plant, the first instar larvae will gnaw the leaves into notches, and the middle-aged larvae will eat all the leaves. To control this pest, you can use an insect net to catch the adult insects before the dew dries in the morning, or manually remove the insect branches, remove the overwintering insect pupa, or spray 45% malathion EC 1000-1500 times, 40% chrysanthemum EC 1000-1500 times and other drugs at the larval stage.

1. Are citrus butterflies pests?

1. Citrus butterflies are not pests.

1) Citrus butterfly is a pest, which mainly parasitizes on citrus, pepper, pineapple, pepper and other plants, which can harm the young leaves and new shoots of plants.

2) The first instar larvae will gnaw on the young leaves, gnawing the leaves into notches, and the middle-aged larvae will eat all the leaves, or only the petioles and main veins remain.

3) When the insect infestation is severe, all the leaves on the new shoots of young trees will be eaten, which will have a serious impact on the formation of the canopy.

2. Prevention and control methods.

1) Before the dew dries in the morning, catch the adults with an insect trap.

2) During the spawning period and larval stage of the butterfly, the park should be checked frequently, and the insect branches can be manually removed after they are found. After entering the winter, remove the overwintering pupae.

3) After the larvae hatch, spray 1000-1500 times of 45% malathion EC, or 1000-1500 times of 40% chrysanthemum emulsifiable concentrate, or 1500 times of 40% dichlorophorene emulsifiable concentrate, or 2000 times of 10% bromo-horse emulsifiable concentrate.

Second, the harmful symptoms of citrus butterflies

1. Hazard characteristics.

1) The larvae harm the young leaves and shoots, and the first instar larvae feed on the edge of the young leaves, and slowly gnaw on the center of the leaves when they grow up, resulting in only leaf veins left in the leaves, or even leaf veins are eaten up.

2) In citrus nurseries and young citrus orchards, they are often seriously damaged due to the large number of shoots, and the growth period of citrus producing areas with mixed varieties and mountain citrus orchards is different, and the damage of larvae is particularly serious.

2. Occurrence law.

1) After the larvae are mature, they will spin silk in a hidden place as a pad, grasp the silk pad with the hook of the buttoes and toes, and then spin the silk into a belt between the chest and abdomen, and wrap it around the branches and other objects to pupate and overwinter.

2) After entering March and April, the pupa will emerge into a spring-type adult, and if it emerges in July-August, it will be a summer-type adult, and the generations overlap in the field.

3) Adults like to eat nectar, good at flying, generally will be active during the day, mating, noon to dusk before the most active, after mating will lay eggs on the back of the young leaves or at the tip of the leaf.

Citrus butterflies, also known as orange butterflies, orange butterflies, etc., are a kind of insect pests that appear during the growth of citrus. Since this pest can seriously affect citrus quality and yield, farmers must take timely measures to control it. This article will lead you to learn about the relevant technical knowledge of citrus butterflies, hoping to help farmers.

Symptoms: The larvae are used as the pest of citrus young leaves and shoots, and the first instar larvae feed on the edge of the young leaves. When the insect grows up, it gradually bites and feeds on the center of the leaf, leaving only the leaf veins, and when it is severe, the high ridge of the leaf veins is eaten up, which seriously affects the growth of citrus seedlings and young trees and the formation of the crown of the cherry.

In citrus nurseries and young citrus orchards, the damage is particularly serious due to the large number of shoots. The citrus producing areas with mixed varieties are not exactly the same as the citrus orchards in the mountainous areas, and the butterfly larvae are particularly seriously damaged.

Pattern of occurrence: 1) Generations. There are 3 generations in the Yangtze River basin and the north of the Yangtze River every year, 4 generations in Jiangxi, and 5 to 6 generations in Fujian and Taiwan.

2) Overwintering. The pupa overwinters in hidden places such as branches and leaf backs. (3) Period.

The occurrence period of the overwintering generation of adults in Zhejiang is 5 June, the 1st generation is 7 to 8 months, and the 2nd generation is 9 to 10 months, and the third generation of pupae is overwintered. Guangdong wintering generation 3 April, 1st generation late April to May, 2nd generation late May to June, 3rd generation late June to July, 4th generation 8 September, 5th generation 10 November, overwintering with 6th generation pupa.

Control measures: 1) Agriculture. Kill larvae and pupa.

In order to protect the natural enemies, the pupae can be placed in a sarong and placed in the garden, and the parasitic bees will fly out after feathering and then parasitize. (3) Pharmacy. The young larvae can be sprayed with 40% dichlorfon emulsifiable concentrate 1500 times, or 90% trichlorfon crystals 800 1000 times.