Hirsutella Thompsonii Infecting Phytophagous Mites on Beans in the Philippines
Examples are cited from the literature of a pathogenic fungus, Hirsutella thompsonii infecting Phyllocoptruta oleivora and other phytophagous mites, and attention is drawn to the proven possibility of mass-producing the fungus by culture on artificial media. In the Philippines, H. thompsonii was collected from a small plot of beans [Phaseolus] on the island of Palawan; diseased mites were not observed during collection, but some infected tarsonemids were observed under the microscope in the laboratory on a bean leaf carrying a cicadellid infected by another fungus. The morphology of H. thompsonii on the mites (which could not be further identified) is described. The fungus was isolated and multiplied on dextrose agar, giving rise to phialides slightly less regular in shape than those observed on the mites. This is the first record of H. thompsonii infecting a tarsonemid.
Rombach, M.C., D.W. Roberts and B.M. Shepard. 1986. Hirsutella thompsonii infecting phytophagous mites on beans in the Philippines. Philipp. Entomol. 6: 620-622.