Testate amoeba species composition from the suspended soil of the aerial roots of Ficus sp. and two other biotopes in the Yalong Bay Tropical Paradise Forest Park, Hainan, China is described. Testate amoebae diversity was highest in the suspended soil of the aerial roots (36 taxa) followed by ground soil (25) and litter deposited in the tree hollow (11). Two new species, namely Bullinularia maxima and Bullinularia macroporum, are described as a result of the taxonomic revision of the genus Bullinularia. The key to the species and brief synopsis of the genus Bullinularia is developed.