Subject: robber fly id
Geographic location of the bug: barnegat new jersey
Time: 08:26 PM EDT
Your letter to the bugman: giant robber fly – asilidae family. but what genus species? promachus?? seent at cloverdale farm county park 7/28/18. i always have robber fly questions, any resources for field guides or at least to narrow down genera in nj?
How you want your letter signed: WS
We believe you are correct that this is a Giant Robber Fly in the genus Promachus, and it looks most like Promachus hinei based on this BugGuide image, but that species is only reported as far east as Ohio on BugGuide. It might be the same species as your previous submission. You can try submitting your images to BugGuide to see if the network of contributors there can provide you with a species identity.