Etiology: Trixacarus caviae is a sarcoptid mange mite of guinea pigs.
Incidence: Incidence of mange mites in guinea pigs is rare.
Transmission: Transmission occurs by direct contact.
Distribution: Mites are distributed on the back, neck and shoulders. Mites may spread over the entire body.
Clinical Signs: Clinical signs range from alopecia and pruritus to hyperkeratotic dermatitis. Lethargy, secondary bacterial infection, anorexia and emaciation may occur in severe cases.
Diagnosis: Diagnosis can be made by deep skin scraping at the edges of suspected lesions.
Ambulacral Suckers, Female: Leg pairs 1 & 2
Arabulacral Suckers, Male: Leg pairs 1, 2 & 4
Bilobed Idiosoma: None
Female Size: 380 x 270 µm
Male Size: 220 x 170 µm
Anal Slit Position: Terminal
Rear Leg Length: Do not extend beyond body margin
Public Health Significance: Trixacarus caviae may spread by direct contact to human handlers and cause transient pruritic dermatitis.