Horse mite

Important note: Psoroptes equi is an ectoparasite of animals causing psoroptic mange and is not a plant pest. As an agricultural editor, I am providing this data as an overview of a biological organism frequently misidentified in agricultural databases.

Taxonomically, this mite belongs to the order Acariformes and the family Psoroptidae. It is a microscopic parasite that lives on the skin surface of equines. Unlike burrowing mites, Psoroptes equi lives on the surface, feeding on skin secretions and lymph by puncturing the epidermis.

The life cycle is completed entirely on the host and includes the stages of egg, larva, protonymph, deutonymph, and adult. The lifecycle spans approximately 10 to 14 days, allowing for rapid reproduction. Transmission occurs primarily through direct contact between animals or through contaminated grooming equipment and stable materials.

The damage caused by these mites includes intense pruritus (itching), which leads the animal to scratch and bite, resulting in self-inflicted trauma. This causes hair loss (alopecia), skin inflammation, the formation of crusts or scabs, and skin thickening. In severe cases, the animal becomes severely emaciated and experiences significant stress, reducing its overall health and productivity.

Control measures rely heavily on veterinary intervention, including the administration of systemic acaricides or topical treatments such as pour-on formulations. Furthermore, thorough cleaning and disinfecting of stables and equipment are essential to eliminate environmental reservoirs. Strict quarantine measures for introduced animals are the primary method of preventing the infestation of a healthy stable.