Ophionyssus natricis, the snake mite, is a blood-feeding ectoparasite that infests captive snakes and sometimes lizards. Mites cluster around the eyes, under scales, and near the vent, and heavy infestations cause anemia, restlessness, excessive soaking, and dysecdysis. Snake mites also transmit bacterial pathogens between reptiles. Infestations spread rapidly in collections and are a common reason for skin disease and secondary infection in pet snakes.
The snake mite is a tiny, dark, blood-feeding ectoparasite and one of the most common external parasites of captive snakes. It can also affect lizards and spreads quickly through a collection, making it a significant pest in reptile keeping.
Mites are usually introduced by newly acquired animals, contaminated enclosures, substrate, or shared equipment such as hooks and water bowls. Warm, humid conditions allow rapid breeding through egg, larval, nymph, and adult stages, so populations explode if untreated.
Signs include small moving dots on the snake or on the keeper's hands, gray or white mite droppings (mite dust) on the skin, snakes soaking excessively in the water bowl, restlessness, dull skin, poor sheds, and, in heavy infestations, anemia, weakness, and secondary infections.
Diagnosis is made by finding mites or their droppings on the reptile, especially around the eyes, chin grooves, and vent, or by seeing drowned mites in the water bowl after the snake soaks.
Effective treatment requires both treating the animal with reptile-safe acaricides and thoroughly cleaning and treating the enclosure and its contents to break the life cycle. New arrivals must be quarantined, and any anemia or secondary infection is addressed separately.
Prevent infestations by quarantining new reptiles, inspecting animals carefully on arrival, disinfecting equipment between enclosures, and maintaining strict hygiene.
This content is for educational purposes and is not a substitute for professional veterinary advice. If you are worried about your pet, contact your veterinarian.
