Natural host.—Panesthia angustipennis, Philippine Islands (Kidder, 1937).
Paraclevelandia brevis Kidder
Natural hosts.—Panesthia angustipennis, Philippine Islands, and Panesthia spadica, Japan (Kidder, 1937): Present in 100 percent of P. angustipennis and in nearly all P. spadica.
Paraclevelandia simplex Kidder
Natural hosts.—Panesthia angustipennis, Philippine Islands (Kidder, 1937, 1938): Incidence of infection about 50 percent.
Panesthia spadica, Japan (Kidder, 1937).
Unidentified ciliate
Natural host.—Pycnoscelus surinamensis, Hawaii (Schwabe, 1950): A large ciliate was found in the digestive tract and malpighian tubules.