Subject: 2 bugs: fighting or mating?
Geographic location of the bug: Kootenays, British Columbia, Canada
Time: 12:51 PM EDT
Your letter to the bugman: I was out camping and the hairy looking bug on top aggressively latched onto the one with long antennae. Just wondering what they are, and what was going on? Is the hairy one eating the other one? Are they male and female of the same species and they’re mating? (seems unlikely, they look so different) Thank you for your help!
How you want your letter signed: Jesse
Your images are awesome, but we wish there was more detail in the image to help us identify the predator, because this is most definitely NOT mating. The prey is a Whitespotted Sawyer, Monochamus scutellatus (see BugGuide), and the predator is a large Robber Fly, but we are not certain of the species. It does not look like any of the Robber Flies in the family Asilidae pictured on the Royal British Columbia Museum. Large Robber Flies often take down considerably larger prey that they capture while flying.