Do watermelons have worms? What is a watermelon bug

Yes. Watermelon worm, scientific name armadillidi m vulgare latreille genus Arthropod phylum, Crustacea, Isopods, rat**.

Alias Rat Woman; Commonly known as tide bugs. It is distributed all over China.

The host is mainly harmful to melon seedlings and cruciferous vegetable shoots, young roots and strawberry and other berries in the field. He likes to eat rape, mustard greens, bok choy, tomatoes, cucumbers, pumpkins, gourds, soybeans, cowpeas, amaranth, water spinach, lettuce and other leaves and edible fungi.

Characteristics of damage: Lack of seedlings and broken ridges caused by damage to young shoots and young roots, and eating berries into holes when harming strawberries; The green part of melon seedlings often does not grow vines after being damaged. It has a certain impact on production.

Morphological characteristics The adult body is 10-14 mm long, 5-wide body, oblong, 13 segments, gray-brown, and the head has 1 pair of linear antennae; There are 8 segments on the thorax, 1 pair of feet on each segment, 7 pairs of gastropods on the abdomen, and two flaky protrusions at the end of the caudal segment. The female adult body is dark brown on the back, with faintly yellow-brown cloud-like lines, and the posterior margin of each segment has a white edge, and the male is blue-black. The eggs are nearly spherical to ovate, yellowish-brown.

The hatched larvae are white, translucent, about 1 3 1 5 mm long, 0 5 a wide, and then gradually darken, similar in morphology to adults, only different in size and body color.

Life habits The insect viviparous reproduction, leaving the mother can move freely to feed, after feeding, the color of the body wall becomes darker, the body increases, every period of time needs to drill into the soil to molt, each female can reproduce 110 heads, the larvae hatch more with the female adult swarm together, after about 1-2 5 months to begin independent life, after 1 year of maturity, mostly occur in the dark and damp corner or stone, soil clods, night out for harm, to 21-22 o'clock in the evening, 7-8 o'clock in the morning activity is the most prosperous, cloudy days also come out activities, seedlings and fruit are vulnerable, It has tropism to circle fertilizer and rotting grass, has negative phototaxis and feign death, and immediately curls into a "watermelon" shape after being frightened.

In addition, there is a kind of watermelon insect in China, the scientific name is porcellio scaber latreille called ball rat woman, widely distributed indoors and damp places, and it is also harmful to rape in the field.

Prevention and control methods (1) The vegetable fields and ponds and ditches near the village should be strengthened. There are no weeds left in the field, and rotten grass is collected between the ridges and ridges for booby-trapping. (2) Avoid applying organic fertilizer that is not fully decomposed in vegetable fields.

3) Combined with the prevention and control of underground pest spraying In the rape seedling stage, when it is found that the insect volume is large, start spraying 25 Ekkas EC 1500 times liquid or 20 insect dead net wettable powder 2000 times liquid, 10 imidacloprid wettable powder 2500 times liquid.

There is no direct transmission between people and insects, and there is no similar source of disease, so even if the dish bitten by the insect is directly used, there is no problem.

I've never seen a watermelon with worms growing in the vine, but I think it's better not to eat it to avoid unnecessary diseases. None of our watermelons have this happening!! You should see if it's good or bad before you buy it!!

This is my opinion alone!!

It may be that the watermelon is ripe and hollow, and it is better not to eat this watermelon if you encounter it.

I've never seen a watermelon with worms

Normally, the little white holes that don't give birth to insects may be used to ripen them, and you can also cut open the watermelon to see.

The watermelon insect is also known as the rat woman and the tide insect, because it will shrink up to form a body circle when it is defended and frightened, and there are patterns on the body, so it is called the watermelon insect.

Rat woman, also known as rat negative, negative pan, rat girl, rat sticky, ground lice, etc., is the common name of the crustacean and other pods, tide insect suborder, tide insect family, rat woman animal, there are more than 150 species in the world, most of them are widely distributed worldwide species. Most of the rat women have long ovoid bodies, and they are distributed from the seashore to the highlands about 5,000 meters above sea level. The common species in China include rat woman, smooth rat woman, etc.

The earliest record of rat women can be found in the insect section of the Compendium of Materia Medica.

The rat woman is one of the crustaceans adapted to terrestrial life, usually living in moist, humus-rich places, such as under rocks in damp places, under decaying wood, in tree cavities, in damp grass and moss, under water tanks in courtyards, under flower pots, and even in damp indoor places. Omnivorous, eating dead leaves, dead grass, green plants, fungus spores, etc. Autumn is the peak breeding period for rat women.

At 21 o'clock, hatch into larvae after about 26 days.

Collection Method:

For the convenience of collection, shovel the lawn with soil by the roots, cover it on the lawn next to the wall, do not water it for a few days, and after the grass is dry, water a small amount of water for about three days, as long as it is relatively wet. If you start collecting in about a month, you can get a larger number of rat women. Moreover, the harvesting process is very convenient, as long as the turf is removed.

During the collection of rat women, it must be carefully protected, and after collection, the container should be filled with some wet soil and pay attention to ventilation. Wet soil is best rich in organic matter, the color is best black, at the same time you can put a few rotten leaves or some small roots of plants, you can also dig a pit in the ground in a dark corner when collecting, put in a plastic cup, the mouth of the cup is flush with the ground, put a little fruit in the cup, and a large number of rat women can be lured overnight.

The above content reference: Encyclopedia - Watermelon Worm.

The characteristics of watermelon insects are: negative phototaxis and feign death.

Living in the humid land, the insect viviparously reproduces, leaves the mother body can move freely to feed, after feeding, the body wall color becomes darker, the body is enlarged, the old hand needs to burrow into the soil for a period of time to molt, each female can reproduce 110 heads, the larvae hatch with the female adult swarm together, after about 1 2 months after the beginning of independent life, after 1 year of maturity.

It mostly occurs in the dark and damp corner of the wall or under the stone and soil clods, and is harmful at night, with 21 22 o'clock in the evening, 7 or 8 o'clock in the morning, and it is also active on cloudy days, and the seedlings and sticking fruits are susceptible, and they are tropic to the circle fertilizer and rotten grass, omnivorous, and eat dead leaves, dead grass, green plants, fungal spores, etc. Immediately after being frightened, it curls up into a "watermelon" shape.

Morphological characteristics of watermelon insects:

The body is oval or oblong, flattened, slightly raised on the back, and the body can be curled into a spherical shape. Some species have a smooth back, and some have coarse grains. The head is small, inconspicuous, embedded in the anterior border of the 1st thoracic segment.

The cephalic segment has prominent lobes in the middle and on both sides. Broad chest, 7 free joints.

The abdominal segments are 6 segments, the first two abdominal segments are narrower, but not significantly narrower than the chest, and each segment narrows posteriorly. The flanks of each thoracic and abdominal segment are generally enlarged to form lateral lobes, the outer terminal angles of each thorax and abdomen on both sides protrude posteriorly and inferiorly, and the ends of the caudal segment protrude posteriorly and are triangular.

The eyes are well developed and compound eyes. The first antennae are small, with short whiskers at the apex; The second antennae are long, with 5 stalk segments and 2 whip segments. The labial base is arcuate, the large jaw has no tentacles, the cutting part is highly chitinized, generally has 2 toothed plates, and there are membranous balance lobes behind the tooth plates, and the molars are degenerated.

Watermelon insect is precisely the rat woman, the rat woman is also known as the rat negative, negative pan, rat girl, rat sticky, ground lice, etc., is the common name of the crustacea and other pods (isopoda) tide insect suborder (oniscoidea) tide insect family (oniscidae) rat woman (porcellio) animals, there are more than 150 species in the world, most of them are widely distributed worldwide species. They are mostly long ovate in shape and can be found from the seashore to the highlands at an altitude of about 5,000 meters. The common species in China include rat woman, smooth rat woman, etc.

The earliest record of the rat woman can be found in the insect part of the "Compendium of Materia Medica".

Sprinkle with salt: In areas where watermelon insects are frequented, sprinkle salt and check once at intervals. Put sticky bug paper:

It is used to trap the adult watermelon insect invading the room, effectively preventing the adult watermelon insect from invading the indoor and causing harm, and reducing the risk of invading the indoors. Spraying drugs: Use drugs to spray the active areas found by watermelon insects, such as gaps in wall foundations, floors and other areas.

1. Sprinkle edible salt: In areas where watermelon insects are often infested, sprinkle edible salt, and check once at intervals.

2. Put sticky insect paper: It is used to catch the adult watermelon insect invading the room, effectively preventing the adult watermelon insect from invading the indoor and causing harm, and reducing the risk of invading the indoors.

3. Spraying drugs: The active areas found by watermelon insects are sprayed with drugs, such as the cracks in the wall foundation, the ground and other areas.

Prevention and control methods (1) The vegetable fields and ponds and ditches near the village should be strengthened. There are no weeds left in the field, and rotten grass is collected between the ridges and ridges for booby-trapping.

(2) Avoid applying organic fertilizer that is not fully decomposed in vegetable fields.

3. Combined with the prevention and control of underground pests and spraying. In the juvenile stage of rapeseed, when it was found that the insect quantity was large, it began to spray 1500 times of 25% kashi emulsifiable concentrate or 2000 times of 20% worm dead net wettable powder and 2500 times of 10% imidacloprid wettable powder.

Tide bugs. Also known as watermelon insects, rat women insects, living in humid land The insect viviparously reproduces, leaves the mother body can move freely to feed, after feeding, the body wall color becomes darker, the body increases, every period of time needs to drill into the soil to molt, each female can reproduce 110 heads, the larvae hatch with the female adult swarm together, about a month after the beginning of independent life.

After 1 year of maturity, mostly occur in the dark and damp corner of the wall or under the stones, clods, out of the night for harm, to 21-22 o'clock in the evening, 7-8 o'clock in the morning activity is the most prosperous, cloudy days also come out of the activity, seedlings and sticking to the ground fruit is susceptible, there is tropism to the circle fertilizer and rotting grass, there is negative phototaxis and feign death, immediately after being frightened to roll into the shape of "watermelon".

I believe that everyone often sees this kind of insect on watermelons in summer, so what does it look like? The watermelon insect, also known as Spodoptera exigua, is a pest that destroys melons and fruits, and belongs to the insect class Lepidoptera.

Conformation characteristics. The body length of the adult watermelon insect is about centimeter-shaped and about a meter, brownish-yellow, and the forewings are slightly triangular; The larvae have a snake-like body with some spiny-like protrusions on the surface of the body.

Habits. The watermelon worm is a nocturnal pest that prefers to be nocturnal. The larvae lay eggs on the peel and feed on the peel and pulp, and reproduce rapidly. Adults often rest on melons and fruits, and even co-parasitize with other insects on a melon.

Harm. During the growth period of melons and fruits, watermelon insects will constantly feed and lay eggs, resulting in a decrease in the quality of melons and fruits, poor taste, and may damage the appearance of melons and fruits. Therefore, melon farmers usually use chemical methods such as pesticides to control it.

Prevention and control methods. In order to reduce the harm of chemicals to the environment and human body, modern melon farmers often tend to use green methods such as biological control. This method mainly controls the pest population by introducing exotic natural enemies.

Tips: If you find a few hard dots on the skin of the melon when you buy the melon section, then it is likely that this is the trace left by the watermelon worm. Therefore, you need to observe carefully when buying melons and fruits to avoid buying damaged melons and fruits.

Epilogue. Although watermelon insects often bring trouble in summer, mastering certain control measures can reduce their harm to melons and fruits, so that everyone can taste healthier and more delicious summer fruits.