Macrochelidae

Macrochelidae is a family of mesostigmatic mites. These mites are commonly found in soil, dung, and other decaying organic matter. They are often associated with various arthropods, including insects and other mites, as well as vertebrates. Macrochelidae are primarily predatory, feeding on small invertebrates such as insect larvae, springtails, and other mites. Some species may also scavenge on dead organisms.

The family Macrochelidae includes over 200 described species, distributed worldwide, with a notable diversity in tropical and subtropical regions. They are characterized by a sclerotized dorsal shield, the presence of sternal setae, and a distinct gnathosoma. Their life cycle typically involves egg, larval, nymphal, and adult stages.

Many Macrochelidae species exhibit phoresy, a phenomenon where they attach to a host organism for dispersal. This association is common with dung beetles and flies, which help transport the mites to new feeding and breeding sites. This phoretic relationship is often facultative, meaning the mites can survive and reproduce without a host.

While generally considered beneficial for their role in controlling pest populations, some Macrochelidae species have been implicated in the transmission of pathogens or as minor irritants to livestock. However, their ecological significance mainly lies in their predatory activities within soil and dung ecosystems. Research continues to explore their complex interactions with hosts and their contributions to nutrient cycling in various environments.