Insect bites include ants, ants, fly dander, and mosquitoes. Biting insects include bees, wasps, and hornets. These insects are often a nuisance, but some people may experience allergic reactions to bites or stings. Some insects carry diseases to people. The so-called arthropod group also includes insects that belong to the arachnid family—spiders, scorpions, ticks, and mites. The main venomous spiders in the United States are the brown-tailed spider, black widow, tarantula, and chives. feeling sick but can be treated without any problem