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于辽宁省小型兽类体外及其窝巢中共发现蚤类５科２０属３３种。蚤种分布与小型兽类的分布密切相关，同时受生态地理条件的影响和制约，即不同地区因宿主分布上的不同，蚤的种类分布有所差异，或同一宿主在不同生态地理区域内，其寄生蚤种类组成也有差异。家鼠优势种为褐家鼠，其寄生蚤共５种，多数地区优势种为不等单蚤，其次为印鼠客蚤。野鼠优势种为黑线仓鼠、黑线姬鼠、达乌尔黄鼠，黑线仓鼠寄生蚤共７种，多数地区优势种为二齿新蚤，其次为短跗鬃眼蚤；黑线姬鼠寄生蚤共５种，多数地区优势种为二齿新蚤，其次为同源栉眼蚤：达乌尔黄鼠寄生蚤共１１种，各地区优势种均为方形黄鼠蚤松江亚种，其次为二齿新蚤。
A total of 33 species of 20 genera and 5 families of fleas were found in small mammals and their nests in Liaoning Province. The distribution of fleas is closely related to the distribution of small mammals. At the same time, it is affected and restricted by ecological and geographical conditions, that is, the distribution of fleas is different in different regions due to different host distributions, or the same host is located in different ecological geographical regions, The parasitic fleas species composition is also different. Rattus norvegicus is the predominant species of house mouse, with 5 species of parasitic fleas. The predominant species in most areas are single flea, followed by Indian rat fleas. The dominant species of Vole were seven species of parasitic flea such as black hamster, Apodemus agrarius, Daurian ground squirrel and black hamster, and the dominant species in most areas were Dictylus dentatus, followed by Short-billed fleas; Apodemus agrarius There are 5 species of parasitic fleas, and the dominant species in most regions are the new species of Dicapas, followed by the homoplasia: 11 species of parasitoid fleas in Daluer; For the bidentate new flea.