The body of the rat woman has several segments The body of the rat woman has several segments

Ratwoman (porcellio) is also known as "tide insect". Crustaceans, tidal insects. The body is oval, grayish-brown.

The first antennae are short, and the second antennae are well developed. The back 7 pairs of thoracic limbs become footsteps. It becomes the foot.

The posterior corners of the segments are acute. The abdomen has 6 segments, and finally the caudal segment, which is triangular. It lives in damp places on land, and is nocturnal and has negative phototaxis.

It is not highly adapted to life on land like insects and spiders, and is distributed in most areas of our country, and in the field, it is mainly harmful to cucumbers, tomatoes, rape and other common species such as tide insects, rats, ball rats, etc.

The body of the rat woman has 13 segments.

7 free joints on the thorax and 6 segments on the abdomen.

The rat woman is oval or oblong, flattened, slightly raised on the back, and the body cannot be curled into a spherical shape. The head is small and embedded in the anterior margin of the 1st thoracic segment. The cephalic segment has prominent lobes in the middle and on both sides.

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.

Types of Ratwoman: Ratwoman, Smooth Ratwoman, Square Ratwoman, Rough Ratwoman, Buzzing Ratwoman, Silver Ratwoman.

There are 12 sections of the rat woman's body. There are 7 segments in the chest and 5 segments in the abdomen, a total of 12 segments, and each segment has a pair of legs.

The adult body of the rat woman (also known as the watermelon insect) is 10-14 mm long, the body width is 5-, oblong, 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 rat woman is a small terrestrial crustacean, also known as a turtle or tide insect. They are not insects. It curls up when disturbed. They can be found in moist places, such as fallen leaves and soil during decomposition.

The body is divided into 13 segments, and the first thoracic segment is healed with the neck.

1. It usually occurs in damp and humus-rich places, such as under rocks in damp places, under decaying wood, in tree cavities, in damp grass and moss, under the water tank in the courtyard, under flower pots and even in indoor damp places.

2. Rats (wet insects) are commonly known as tide bugs, tide bugs, tumult bugs, ground lice women, ground liceShoe board bugs, skin plate worm, watermelon worm, etc., belong to the invertebrate arthropod phylum Crustacean tidal insects suborder tidal insects of the family Rats, produced in humid and warm places. Therefore, the most important thing is to keep it dry and clean. If not, the following chemical methods can be used to prevent and control it.

Prevention and control methods:

Poison the soil, sprinkle it on the ground with deltamethrin or 20% quick-kill butadiene soil, and use 50 100 grams per mu to 10 20 kg of soil.

ground spraying, sprayed with 50% dichlorvos 500 times; If the ground is covered with a curtain or other covering after application, the insect will be poisoned due to fear of light and hide inside.

7 pairs of rat women.

Crustaceans: The body is generally divided into cephalothorax and abdomen, and the cephalothorax surface is covered with a tough cephalothorax; two pairs of antennae; In most living waters, the gill generally breathes. The rat woman lives in dark and damp places on land, and has an oval, grayish-brown body.

The first antennae are underdeveloped, the second antennae are developed. Thorax seven segments, each segment has a pair of thoracic limbs. The thoracic limbs are of equal length, suitable for crawling.

The abdomen has six segments, and finally the caudal segment, which is triangular.