If it looks like a wasp, it's a beetle
The Japanese knotweed ( Fallopia japonica ) in my backyard has been a constant bane of my existence ever since it started to creep in a few years ago, but today it yielded some nice results. When it flowers during the summer, it brings in a lot of pretty bees and wasps, and today I found a wasp-mimic beetle. The venerable locust borer, Megacyllene robiniae , was busily sticking its head into the knotweed flowers until I disturbed it. I took a few photos, then lifted my camera and realized the beetle was gone. Luckily, I was able to snap this photo of it folding out its wings to escape the paparazzi. The locust borer is a longhorned beetle in the family Cerambycidae and develops as a larva inside of black locust ( Robinia pseudoacacia ), from which it emerges as an adult in the fall. It then nectars on flowers such as goldenrod and searches for a mate. This species takes its Batesian mimicry to the max--even the top of its abdomen, normally covered by its elytra--has the yellow markings...
