Mimarachnidae is a Mesozoic planthopper family, with high palaeodiverisity at generic and species levels during Cretaceous. Herein, geometric morphometric analysis of mimarachinid forewings was executed. Our results of principal component and cluster analyses show that Dachibangus formosus and D. hui are morphologically distinct from the type species of Dachibangus. Therefore, Xiaochibangus gen. nov. is erected, and those two species are transferred to this new genus, resulting in new combinations – Xiaochibangus formosus comb. nov. and X. hui comb. nov. Besides, Jaculistilus xixuanae sp. nov., the second species of Jaculistilus with well-preserved 12 eyespots on tegmina, is described here from mid-Cretaceous Kachin amber of northern Myanmar, adding novel knowledge on the palaeodiversity of Mimarachnidae.

Mimarachnidae 是一个中生代飞虱科，在白垩纪的一般和物种水平上具有高度的古多样性。在此，对 mimarachinid 前翅进行了几何形态测量分析。我们的主成分和聚类分析结果表明，Dachibangus formosus和D. hui在形态上与Dachibangus的模式种不同。因此，小赤班古根。十一月 被竖立起来，这两个物种被转移到这个新属中，产生了新的组合——小赤班格斯梳子。十一月 和X. hui梳。十一月 此外，Jaculistilus xixuanae sp。11 月， Jaculistilus的第二个物种在 tegmina 上有保存完好的 12 个眼点，这里描述了来自缅甸北部白垩纪中期的克钦琥珀，增加了关于 Mimarachnidae 古多样性的新知识。