Corrections A previous version of this story said a rubber fly was found during the Ojibway Prairie BioBlitz. In fact, it was a robber fly. Jul 20, 2015 6:50 AM PDT ...

Robber flies are a cosmopolitan family with over 7,500 distinct species distributed around the globe, including right here in Ontario, such as Laphria posticata and Promachus bastardii — the ...