Sorry to hear that Danno, but I would be very suprised if cuke beetles took down a squash
plant overnight. I would be more inclined to believe that it was a squash vine borer. I have lots of cuke beetles on my curcurbits and rarely see any damage. They usually hang around in the
flowers and while they CAN feed on foliage and
flowers, they usually eat very little. They can however be a vector for bacterial wilt which will take down a
plant, but not normally overnight. And BW is most often found in cucumber
plants more than squash. If you suspect BW, look for white, stringy ooze when you break a stem. If you find it, remove the
plant and discard it. Cuke beetles are easy to catch and kill by hand too. Look for SVB entrance holes in the stems of your squash
plants at the soil level. In my experience, SVBs are difficult to find and control in the stems of the
plant, but if you do be sure to kill them. Affected
plants can sometimes be saved by mounding soil over the entrance holes where they'll grow new roots. The
plants will usually continue to produce fruit, so there is a possibilty that I'm wrong, but that's what I'd look for first.
BTW, it may still be early enough to sow some more squash for a late harvest.