Micraglossa beia is a moth in the family Crambidae. It was described by Wei-Chun Li, Hou-Hun Li and Matthias Nuss in 2010. It is found in China (Xizang, Sichuan, Guizhou, Henan, Hubei, Fujian, Gansu, Zhejiang, Guangxi).
The length of the forewings is 6âÂÂ8 mm for males and 6âÂÂ8.5 mm for females.