Oak trees in Southern Illinois -- specifically trees in the red oak family -- are being killed by galls. The galls are the result of infestation by gouty oak gall wasps, a tiny insect that lays ...

You might be mentally prepared for Illinois' massive cicada emergence coming up. But there's one part of the insect's arrival that you may have not considered: the surfacing of the Cicada Killer Wasp.

A cicada killer wasp lands on a giant hyssop at the Lurie Garden in Millennium Park in 2013. Cicada killers are large — about 2 inches long — and black to red, with yellow banded markings on ...