A new citizen science survey aims to shed light on that fixture of summertime in the outdoors: the wasp. Though much maligned, these fascinating creatures perform a vital ecological role ...

Erythrina gall wasps, mostly yellow, 6- to 8-millimeter-long invasive pests, create galls — swollen, tumor-like growths — in erythrina tree tissue that serve as cocoons for their larvae to mature.

Twenty-two new species of gall wasps have been identified and named for the first time, thanks to new research led by a Penn State College of Agricultural Sciences graduate student. The study ...