Two new peculiar mid-Cretaceous braconid genera, Megalyrhyssalus gen. nov. (type species Megalyrhyssalus clavicornis sp. nov.) and Stephanorhyssalus gen. nov. (type species Stephanorhyssalus longiscapus sp. nov.), are described and illustrated from Burmese amber. According to the particular morphology and wing venation of Megalyrhyssalus gen. nov. a new subfamily Megalyrhyssalinae subfam. nov. is created. The subfamily Seneciobraconinae is synonymised under Protorhyssalinae (syn. nov.). Additionally, a key to the genera of Braconidae having second recurrent vein (2m-cu) in forewing is provided.

两个新的白垩纪中期特异的腕科动物属，Megalyrhyssalus gen。十一月 （类型种Megalyrhyssalus clavicornis sp. nov.）和Stephanorhyssalus gen。十一月 （类型物种Stephanorhyssalus longiscapus sp. nov.），是从缅甸琥珀中描述和说明的。根据Megalyrhyssalus gen的特殊形态和翅脉。十一月 一个新的亚科 Megalyrhyssalinae 亚科。十一月 被建造。亚科 Seneciobraconinae 在 Protorhyssalinae (syn. nov.) 下同义。此外，还提供了在前翅中具有第二回脉 (2m-cu) 的 Braconidae 属的关键。