Plecia pealei (Scudder)
Green River Formation
Middle Eocene
Lincoln County, Wyoming

This is an good example of the fly Plecia pealei (Scudder). The wings lack good detail but the thorax and legs are well preserved. Plecia pealei is commonly known as a March Fly. This is one of the few Green River insects that is adequately studied and named by Samuel Scudder in the 1890's.