Yes, red spider mites do bite humans. They bite humans in failed attempts to lay their eggs. The bites typically leave small red bumps that cause extreme itching. Use over-the-counter anti-itch products to counteract the itching and to help the bites heal faster. Refrain from scratching the affected area.
Spider mites are common pests throughout much of the northern United States. They feed on plants and trees, causing damage and sometimes death to the food source. Red spider mites are very small and often difficult to see with the naked eye. Beetles and pirate bugs are some of their natural predators.