Subject: Flying insect
Geographic location of the bug: massachusetts, USA
Time: 03:40 PM EDT
Your letter to the bugman: Hi, there’s a bunch of these flying around. They seem to enjoy sitting in one place for a long time or sunbathing. Was having trouble identifying it.. But very curious about it.
How you want your letter signed: Michal
This is a beneficial, predatory Robber Fly and the ovipositor indicates she is female. She uses her ovipositor to lay eggs and cannot sting with it. Based on this BugGuide image, we are confident your Robber Fly is in the genus Efferia.