Mites of the order Acari are small parasites that live almost all over the world. They are one of the most common animal parasites as they can cause serious illness in humans and animals. There are more than 25 thousand species of acariform mites, and each of these species may have its own unique properties and characteristics. In this article we will look at the main types of Acariphora mites and their impact on human and animal health. Acaroform mites (often called simply acari) are an order of arachnids. This order includes gamasaceae (or granary), urogonophors, gall mites, as well as small ixodid mites, several dozen each, small soil inhabitants from the order Sarcoptophoridae. And one more group - all sarcoptids, which includes more than 3 thousand species. Certain groups of ticks are also dangerous parasites for humans, dogs, cats and farm animals. Thanks to this, acarids are perfectly adapted to exist in a wide variety of conditions. But at the same time, most ticks are harmful to agriculture. The only exception is the common gall midge. Several hundred of its species are agroparasitoids, that is, they harm agricultural crops. Acaridine is a blood parasite of honey bees. With its size (8 - 14 mm) and color, acaridine resembles the bee thief already mentioned above and is actively devoured by them, especially young queens and larvae. Parasites also settle on males, but do not destroy the latter, since they do not cause significant damage to them. In addition, they are quite widespread among queen bees and larvae. In female and male insects, damage to the digestive canals and intestines is very common, which is caused by parasitism of eggs and larvae of mites.