Tiny moth from Asia spreading fast on Siberian elms in eastern North America

Source: Science Daily

Since 2010, a tiny moth originating from East Asia has been spreading over eastern North America. Its green larvae, or caterpillars, make narrow tunnels in the leaves of Siberian elms. Sometimes very abundant, they can be seen to descend en masse from the trees when they are done feeding. The moth species was described independently from Russia as Stigmella multispicata in 2014.

https://www.sciencedaily.com/releases/2018/09/180917082449.htm