New fly may bug crime scene investigators

When detectives find a corpse lying in a ditch or anywhere else, determining how long it has been there is one of the first tasks. A good estimate comes from the age of the flies found swarming the dead body, but this technique may be complicated in the Midwest by a fly found newly buzzing there, according to a forensic entomologist.

“The composition of what (flies are) around is changing as the climate changes,” Christine Picard, a biologist with the Forensic and Investigative Sciences program at Indiana University — Purdue University Indianapolis, explained to NBC News.