Any photos? More detailed description?
This could be useful to others.

I thought Squash vine borer laid in the soil at the base or directly into the stem.I didn't think you could see the eggs as you can with cucumber beetles; only the evidence that they hatched and it's too late.

Oh no, they lay eggs just about anywhere on the plant. The eggs are small - about the size of a pin head- and reddish brown in color. I have had a terrible time with them on my crooknecks and zucchini. I have picked hundreds of eggs, but the borer prevailed and I lost 2 plants so far. The other 2 have been invaded - I had to cut the stem and pull out the larvae, then bury the stem to root and hopefully save the rest of the plant. It's up in the air as to whether I will get any more fruit. I think next year I will try row covers.

Good luck with yours! Let us know what you spray with and how they do!

I read a good article the other day that suggested spraying w BT every week to kill the larvae once they hatch. Also, to put aluminum foil around the bast of your plant so they can't bore in, but honestly, I've seen them go in around where the stems meet the base too. It might be worth a try since I've lost most of my plant again this year to them. Will be using an insecticide next year. I hate it, but it's apparently either that or no squash. And I love squash. =)

The eggs must look similar to the squash bug eggs then? I looked them up and can hardly tell the difference! Guess it doesn't matter will try to get rid of ALL of them! I worry about the vine borers worse than the bugs. I over plant and it is hard to get to the base of the plants to see what is going on.

Hmmm.....They do look different. My squash bugs must be getting lazy then. I have the clusters which I knew were from the bugs but they are under the leaves, on top of the leaves, down the leaf stems and sometimes spread apart (not in a tight cluster) by � inch or so. Have found 10~12 clusters on top of the leaves. Never saw them on top last year and I was infested! I will post pics when I get a chance. Have to remember on PB which link to copy, can you remind me wierdtrev? Thanks!