There are about 75 species of bedbugs, Hemiptera, Bedbugs, which feed on the blood of people and warm-blooded animals. The body is flat and wide, with a length of 4 to 5 mm (less than 0.2_). The female insect is larger than the male insect, reddish brown, with scaly wings, smelly glands and special smell of secretions.
Bedbugs like to grow in damp and poor sanitary conditions. Bedbugs are afraid of light and mostly move at night. It mainly inhabits bedstead, tent top corners, walls, ceilings, tables and chairs, bookshelves, quilts, straw mats, mattresses and other living room gaps and behind wallpaper.
Bedbugs were also called bedbugs and ticks in ancient China. Bedbugs have a pair of smelly glands, which can secrete an unusually smelly liquid. This smelly liquid has the functions of defending natural enemies and promoting mating. Bugs leave an unpleasant smell wherever they climb, hence the name bug. There are a pair of half-moon smelly glands on the back of the abdomen of nymphs or adults, which can secrete a substance with a special smell, making it notorious.
Bedbugs generally live in groups, so a large number of bedbugs are often found in places suitable for hiding. Whether it's a larva or a male or female adult, they all sneak out at night and suck human blood by means of piercing-sucking mouthparts. When it can't find human blood, it will also suck the blood of rabbits, mice and chickens. Bedbugs suck blood quickly, and they can be full in 5- 10 minutes. After people are bitten by bedbugs, their skin often itches. Allergic people have obvious irritation after being bitten, and the wound often appears red, swollen and itchy. If it is scratched, it will often cause bacterial infection.
With the help of other museums and scholars, the team led by KlaueReinhardt, an entomologist from Dresden University of Technology, spent 15 years collecting thousands of bed lice samples, and finally identified 34 kinds of bed lice for analysis, making the first family tree of bed lice so far. By comparing a Cimicidae fossil 100 million years ago, we can calculate the gene mutation rate of modern members of Cimicidae for many years, thus knowing its origin and how to derive more than 100 varieties.
The history of finding bedbugs is older than expected, and it first appeared in the middle Cretaceous when dinosaurs were rampant1.1.500 million years ago. In the past, academic circles thought that bats were the first hosts (victims) of blood-sucking bedbugs, but the oldest known bat fossils were only 64 million years old, so before bats appeared, the ancestors of bedbugs were blood-sucking parasites.