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Abstract：
Mastotermitidae, the first-diverging extant family of termites, has only one relic extant species; however, this family had greater richness during the Mesozoic and Cenozoic eras. Fossil termites from the Cretaceous provide information on the early evolution of termites and the transition between extinct families. Herein, two new Mastotermitidae species found in upper Cretaceous (Cenomanian) Kachin amber are reported. One is a female imago described as Angustitermesreflexusgen. et sp. nov. and assigned to the subfamily Mastotermitinae. The other is Mastotermesreticulatussp. nov., which is described from an isolated forewing. With the comparison especially of the antenna and venation, these new mastotermitids further increase our knowledge of the diversity and morphology of Mastotermitidae during the Mesozoic.
摘要：
乳虫科，现存的第一个不同的白蚁家族，只有一种现存的遗物；然而，这个家族在中生代和新生代时代拥有更大的财富。来自白垩纪的化石白蚁提供了有关白蚁早期进化和灭绝家族之间过渡的信息。在这里，据报道，在上白垩纪（Cenomanian）Kachin琥珀中发现了两种新的Mastotermitidae。一个是女性意象，被描述为Angustitermesreflexusgen。等sp.11月。并被分配到乳臭虫亚科。另一种是乳胞膜。11月。,这是从一个孤立的前爪描述的。特别是天线和脉络的比较，这些新的乳突虫进一步增加了我们对中生代乳突虫的多样性和形态的了解。
