Ground tigers, a wide variety of hazards.
According to relevant scientific research statistics, there are about 1600 species in China, all of which are infested with larvae. The hosts and harmful objects are cotton, corn, sorghum, millet, wheat, potatoes, beans, hemp, alfalfa, tobacco, sugar beets, rapeseed, melons and a variety of vegetables. A variety of weeds are often their important hosts.
The following six common categories are:
<h1 class="pgc-h-arrow-right" >. Small ground tiger</h1>
Worldwide, multi-food pest. There are more than 100 registered hosts.
It harms corn, cotton, tobacco, and other crops, as well as seedlings and a variety of weeds such as vegetables, flowers, fruit trees, and trees.
1--2 instar larvae feed on the heart or young leaves of the crop, and the larvae above 3 years old bite off the young stems and petioles of the crop, causing missing seedlings and ridge breakage in severe cases, and even need to be replanted.
The egg is steamed bun with longitudinal and transverse ridges on the surface. Diameter 0.6mm, height 0.5mm.
Larvae Mature larvae are 37-47 mm long, yellow-brown to black-brown, rough on the surface, densely covered with large and small particles. There are 4 hairy patches on the back of 1-8 segments of the abdomen, and the last 2 are more than 1 times larger than the first 2. The hips are yellowish brown with 2 dark brown longitudinal bands.
Pupae 18--23mm long, russet brown, shiny.
Adults are 16-25 mm long and have a wingspan of 42 mm–52 mm. The antennae of the female moth are filamentous; the male moth is bicutan-toothed.
<h1 class="pgc-h-arrow-right" >2. Yellowland Tiger</h1>
It is found in the northern provinces and occurs more frequently than in drylands. It is a multi-food pest that harms various crops, vegetables, pastures and lawns.
Egg Hemispherical, 0.5 mm in diameter, with 16-20 longitudinal lines on the surface of the egg shell.
Larvae Mature larvae are 33-43 mm long, yellow-brown, and wrinkled on the surface. There are 4 hairy patches on the back of each of the 1-8 segments of the abdomen, and the last 2 are similar in size to the first 2. There is a yellow-brown longitudinal stripe in the center of the hip plate, which divides the hip plate into 2 large yellow-brown spots.
Pupae are 16--19 mm long, reddish-brown, with 9-10 rows of small incisions on the back of the 5th--7th abdominal segment, and 1 pair of coarse spines at the end of the abdomen.
Adults are 14-19 mm long and have a wingspan of 32 mm-43 mm. The antennae of the female moth are filamentous; the male moth is bicutan-toothed.
<h1 class="pgc-h-arrow-right" >3. Earth Tiger</h1>
It is found throughout the country.
Larvae Mature larvae are 41-61 mm long, yellow-brown, and wrinkled on the surface. It is 2 hairy patches on the back of the ventral segment, similar in size. Except for the yellow-brown near the two bristles at the end, the hip plate is almost all dark brown, and the whole cloth is clear and cracked wrinkles.
Pupae are 23–29 mm long, yellowish brown, with rounded incisions at the anterior margin of the 4th-7th ventral segment of the abdomen, a larger central incision on the dorsal surface, and a pair of gluteal spines at the ventral end.
Adults are 20-22 mm long, have a wingspan of 52 mm–62 mm, and are dark brown. The forewings are brown, the leading edge is blackish brown from the base to 2/3, and the kidney-like stripes, ring-like stripes, and wedge-like stripes are obvious. The hindwings are pale brown with a wide dark-brown fringe on the outer margins.
<h1 class="pgc-h-arrow-right" >4. Police-striped tigers</h1>
Adults are about 16 mm to 18 mm long and have a wingspan of 36 mm to 38 mm.
The body is gray, the head and thorax are grayish brown, the neck plate has a black stripe, and the neck plate is grayish brown.
The females have linear antennae, and the males have double ctenophores and short branches. The forewings are grey to greyish brown , with some forewings and outer edges of the forewings slightly purple-red; The horizontal line is not obvious, the inner horizontal line is dark brown, wavy, the sword pattern is black, the kidney stripe is large, the black edge is brown, the ring spots, the stick spots are very obvious, especially the stick spots are thick and long, black, which is easier to identify. The hindwings are pale , white , with slightly brown tinges.
<h1 class="pgc-h-arrow-right" >5. White-sided tiger</h1>
Adults are 17 to 21 mm long and have a wingspan of 37 to 47 mm.
The color and markings of the forewings vary greatly, from grey-brown to reddish-brown.
It can be divided into two basic color types: one is a white-edged type, that is, the forewing margin has a distinct gray-white to yellowish-white wide edge, the posterior edge of the middle ventricle has a pale narrow edge, the kidney-shaped spot and the ring-shaped spot are gray-white, and connected between the upper and lower white edges, and the middle chamber is on both sides of the annular spot, all black, and the rod-shaped spotted yellow. The other is the darkened type, with all the forewings dark and dark, with no white edges or black markings. Both types of hindwings are brown, the reverse of the wings are grayish brown, the leading edge is densely covered with black-brown scales, the outer edge has 2 brown lines, and the middle chamber has black-brown spots.
<h1 class="pgc-h-arrow-right" >6. Grassy tigers</h1>
Adults are 32 to 40 mm long.
The forewings are dark brown and the hindwings are white with narrow brown bands at the edges. The female moth's forewings are greyish brown or grayish brown variegated, with ring and kidney-shaped stripes, and the contour line is yellowish brown; the male moth's forewings are gray-brown, with a large white spot inward at the apex angle of the wings, a light color band from the outer edge of the wing to the middle chamber on the posterior side of the ring, and a white wedge-shaped stripe on the inside of the kidney-shaped stripe.
#科学燃计划 #
Editor:Old farmer
The information in the text comes from the Internet and the "Atlas of Common Insects in Farmland", the purpose is to exchange and learn, if there is infringement, contact old farmers.