Spinturnix is a genus of mites in the family Spinturnicidae. Spinturnix mites are an ectoparasite found on species of bats. They live exclusively on the wing and tail membranes and are large enough to be seen with the naked eye. Spinturnix mites are a host specific species, meaning they have a few major host species that they prefer, as well as a few less frequently used hosts. In short, these mites will not infect arbitrary bat species. Their selection of host tends to align with the host species that lives closest to their local environment. Spinturnix mites are found strictly on Microchiroptera. These mites are hematophagous, meaning they feed on the blood of their host. They cannot survive without a host for more than a few hours. Therefore, transmission of mites to other hosts must occur by close contact, such as a bat in a roost.

Spinturnix mites are crab-like in appearance. Males have a shield-shaped plate on their underside and a pointed abdomen, while females have teardrop shaped shields and a rounded abdomen. The adaptive claws of the mite allows it to grip the wing membrane and efficiently keep hold of their host, even when their host is in flight.

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