👉 Hirudinae is a family of about 40 genera and more than 1,600 species that are known to be parasitic or feeding on insects. They feed on the exoskeletons of various arthropods, including ants, flies, mosquitoes, termites, spiders, scorpions, and other small animals. This family is responsible for causing a wide range of diseases in humans and many wildlife species by consuming their hosts' bodies.