The elementary traits and diversity of embryonic setal pattes of 31 species of 22 genera, in three tribes of Hormaphidinae are studied. The embryonic setal pattes to every species are provided. Based on the parsimony principle and the developmental principle, these pattes are analyzed in each tribe following the terminology of Richards(1965). It is suggested that the setal pattes of abdominal tergites are the most important characters in embryonic and adult setal pattes. In conclusion, neoteny is a phylogenetic trend in the Hormaphidinae. Nipponaphidini and Hormaphidini have more typical neoteny in each genus and more diversity in different types of adult viviparous females than Cerataphidini, by showing more frequent and various protopattes or mesopattes.