This little buggy is a new threat to the east coast of the United States. This is a Lanternfly and although they look somewhat plain just sitting around, when they fly you can really see that bright red.
Lanterflies are native to China, India and Vietnam and were introduced to Korea in 2006. They were confirmed in Pennsylvania in 2014 and soon came to Delaware, New Jersey and Virginia. They prefer to hang out and lay eggs in the Tree-of-Heaven.
Both the nymphs and adults feed on plants. They suck the fluids out of the stems and leaves which causes the plant's growth to be stunted or some localized damage or, in the case of fruit bearers, a reduction in their yields. The plants can die in extreme cases. As the Lanternflies feed, they excrete a sugary substance that is referred to as 'honeydew'. This substance can attract insects like ants and wasps, but it also gets taken over by a 'sooty mold'. This mold can blacken the plant which can reduce photosynthesis and affects the plant's quality.
So if you live in Maryland, keep an eye out for... the Lanternfly.