Otto Q T, Jordaan L C
Directorate of Animal Health, Nelspruit.
Onderstepoort J Vet Res. 1992 Dec;59(4):335-6.
Some flocks of sheep in the Amersfoort district of Transvaal Province developed orf-like lesions, commencing between December and April. The causative agent was identified as a new species of mite belonging to the genus Guntheria of the family Trombiculidae.