Chances are you have never seen this insect.  This strikingly black and yellow-marked insect is known as the locust borer (Megacylene robiniae).        

       It is interesting to note that entomologists believe the insect’s bold yellow and black pattern deters wasps from preying this boldly marked beetle.

       The only known host of this insect is the black locust tree. Consequently, if you spot on your property, chances are a black locust is growing nearby.

       The emergence of the adult locust borer coincides with the blooming of goldenrod.  It seems that the locust borer is far more often seen dining goldenrod pollen than anywhere else. With that in mind, if you would like to see one of these insects, now is the time to take a close look at the golden, plume-like blossoms of this beautiful fall flower.  Don’t delay, once the goldenrod blooms fade, along with their passing your chances of seeing this insect also disappears until next year.

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