记述采自中国江西武夷山优苔螟属Eudonia 1新种,即截形优苔螟Eudonia abrupta sp. nov.。该种与伊诺优苔螟E. inouei Sasaki,1998 近似,但其雄性外生殖器爪形突的末端与基部等宽,阳茎为抱器瓣长的1.5倍;而伊诺优苔螟的爪形突末端显著窄于基部,阳茎与抱器瓣近等长。文中提供了成虫和外生殖器特征图。模式标本保存在江西农业大学昆虫标本馆。
Eudonia abrupta sp. nov. is described from Jiangxi, China. Photographs of the adult and the genitalia are provided.