Robber Flies (mating pair)

A mating pair of Red-footed Cannibalflies (Promachus rufipes), a species of robber fly (Family Asilidae), was spotted during a photowalk along Deephole Point Road at Occoquan Bay National Wildlife Refuge, Prince William County, Virginia USA.

There’s an obvious difference in the appearance of male and female Red-footed Cannibalflies: the male’s abdomen is “tiger-striped” for its entire length; the female’s abdomen is two-thirds tiger-striped, one-third black. Therefore, the male is shown on the upper-right in the following photo; the female on the lower-left.

23 AUG 2018 | OBNWR | Red-footed Cannibalflies (mating pair)

The next photo shows the male on the upper-left; the female on the lower-right.

23 AUG 2018 | OBNWR | Red-footed Cannibalflies (mating pair)

The last photo shows the female on the left; the male on the right.

23 AUG 2018 | OBNWR | Red-footed Cannibalflies (mating pair)

Copyright © 2018 Walter Sanford. All rights reserved.

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