PennDOT Bug Farm?

My Google fu is failing me, and has been for quite a while.

On a road by my house is a sign that says "penndot bug farm" with an arrow pointing at nothing. No offshoot road, no trail, just the back of a farmers property. 

Searching for it brings up all kinds of DMV links then local farm and farm accessories links, but nothing that explains what it is. 

What is the DOT doing with bugs? Why?

From the quality of their road repairs maybe they use bug shells as aggregate? Or do orange cones come from a Coney wasp maybe?

Perhaps they breed them en masse?.

Only thing that comes up for anything i can find is the Spotted Lanternfly, an invasive species.  Showed up a bunch for some reason. 

In reply to Adrian_Thompson (Forum Supporter) :

There was the VW rabbit farm about 7 minutes up the road and 40 years ago.

This sign is old and official looking. It was there when I put up billboards in the early 00s, from asking locals it's been there even longer but no one knows why.

In reply to Mr_Asa :

They're a big problem in the eastern half of the state. Supposedly they've made their way here but I haven't seen any yet. Really pretty bugs, just absolutely disastrous to farm land. 

We get the Lanternfly here in the midstate.  Insanely beautiful critters.

I read something recently that suggested they aren't causing quite as much damage as had been feared.  Still bad, but not catastrophic like they anticipated.

As far as PennDOT Bug Farm.... I got nothin.