A new genus and species, Burmorussus mirabilis, is described based on two specimens from the mid‐Cretaceous Burmese amber, and considered to be a specialized parasitic wasp of wood‐living hosts. The new taxon is characterized by an orussid‐like ocellar crown, big eyes, antennae attached well above the clypeus, and antennal grooves or ventral transverse frontal carinae absent. Additionally, all legs carry a prominent lanceolate lobe on the third tarsomere. A similar structure is found, but organized differently, in Recent Orussidae and Stephanidae, serving as part of a vibration analyser. Although sharing some characters with families Karatavitidae, Orussidae and Paroryssidae, this new taxon cannot be assigned to any of these families. We propose a new monotypic family Burmorussidae and assign it to the superfamily Orussoidea. A phylogenetic analysis confirms the monophyly of Orussoidea, which occurs a sister group to Apocrita.

中文翻译：

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Burmorussidae，一种新的白垩纪中期缅甸琥珀寄生蜂（昆虫纲，膜翅目）

一个新的属和种，Burmorussus mirabilis以白垩纪中段琥珀的两个标本为基础进行了描述，被认为是木活寄主的专门寄生蜂。新的分类单元的特征是类房顶状的卵丘冠，大眼睛，触角上方附着的触角以及不存在触角沟或腹侧额叶前隆突。另外，所有腿在第三胎some上都带有明显的披针形叶。在最近的Orussidae和Stephanidae中，作为振动分析器的一部分，发现了相似的结构，但组织方式不同。尽管与家庭Karatavitidae，Orussidae和Paroryssidae共享某些角色，但是不能将新分类单元分配给这些家庭中的任何一个。我们提出了一个新的单性科Burmorussidae，并将其分配给超家族Orussoidea。系统发育分析证实了Orussoidea的单性，