Abstract A new species of dance fly, Alavesia tripudii sp. nov., (Diptera, Empidoidea, Atelestidae), archived in a piece of mid-Cretaceous Burmese amber was described and illustrated based on two individuals of different genders, and a cladistics analysis was also performed to establish its phylogenetic position. Furthermore, our specimen showed a remarkable variation in extremely inflated antennas, which might be used by males for enticing females as nuptial gifts. The new finding not only added additional document to the diversity of dance flies in Burmese amber, but also might be related to possible interactions in dance flies.

中文翻译：

---

中白垩世缅甸琥珀中的舞蝇新种（双翅目、蛱蝶科、星虻科）

摘要 一种新的舞蝇种，Alavesia tripudii sp。nov., (Diptera, Empidoidea, Atelestidae), 存档于一块中白垩纪缅甸琥珀中，基于两个不同性别的个体进行了描述和说明，并且还进行了分支学分析以确定其系统发育位置。此外，我们的样本在极度膨胀的触角上表现出显着的变化，雄性可能会将其用作引诱雌性的结婚礼物。这一新发现不仅为缅甸琥珀中舞蝇的多样性增加了额外的证据，而且可能与舞蝇之间可能的相互作用有关。