| abstract | Four new species, Caeculisoma allopenlineatus Xu & Jin sp. nov., Dambullaeus jianfengensis Xu & Jin sp. nov., Iguatonia seemani Xu & Jin sp. nov. and Iguatonia xinfengi Xu & Jin sp. nov. are described and illustrated based on larvae ectoparasitic on insects (Hemiptera) from Hainan Province, China. The genus Iguatonia is reported for the first in China. New data for Caeculisoma penlineatus Xu & Jin, 2019 are given. Keys to world species of larval Caeculisoma, Dambullaeus and Iguatonia are presented. |