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从起源上可以追溯到印度支那半岛的日本稻飞虱,根据用巴拉膜囊法(Parafilmsachet method)测定其在稻株上排泄的蜜露量而决定的排泄指数(REI)的相似性,知其与红河三角洲的稻褐飞虱种群为相似的生物型。生态和气象条件有助于稻飞虱的大型迁移。
The similarity of the excretion index (REI), which is determined according to Parafilmsachet method to determine the amount of honeydew excreted on rice plants, can be traced back to the origin of the rice planthoppers in the Indochina peninsula. It is similar to the rice planthopper population in Honghe delta. Ecological and meteorological conditions contribute to the large-scale migration of planthoppers.