Belonging to arthropods. Nicknames: Networm, Flat Spider, Garden Spider, etc. Its body is divided into a head, chest, and abdomen, which are connected by a slender abdominal stalk; The head has a pair of claws in front of the head, and the end of the claws is the venomous teeth of the venom gland duct; There are four pairs of feet on both sides of the chest, with hard claws at the tips of the feet. Wang Anshi's "Zishuo" records that a web was set up on one side, and when an object touched it, it was executed, hence the name "Spider". Spiders are distributed throughout China, mostly inhabiting eaves, corners of walls, and between trees, forming wheel shaped webs. Spiders are natural enemies of many agricultural and forestry pests and play an important role in biological control. Protecting and utilizing spiders has become an important aspect of biological control.