Where in the world are you?

About the only pest that would eat the fruit that I can find is the Garden Symphlan, most everything else are leaf eaters.

I live in northern Illinois. The bugs ate the bulb of the beet from the bottom up. When I pulled out the beet, all that was left was a little of the top part of the beet root that the leaves sprout out of. This happened last summer. I am planning my 2017 garden and need a plan of attack for these pests as I am sure they are going to be back.

I googled the Garden Symphlan and don't recognize it.

I saw a few of them and they looked charcoal grey or maybe dark brown and were down in the soil with the beet root. They seems flat shaped maybe had 4 or 6 legs tops.

When I say they ate the beet. They ate a tuber the size of a baseball completely. There was nothing left but a little cap of the tuber by the surface.