That;s great info...I hope this post sticks around for awhile.

It sounds like it could be squash vine borer. Here is a link that might be useful: squash vine borer

Is it worth it to spray the Sevin now... of should I wait til they hatch? As much as I hope that I did, I'm assuming I didn't find all of the clusters.

AtlanticGiant, we have no SVB in this region, and the local soil is a sandy, well-draining loam. But I water quite frequently, maybe too frequently, but it has never been a problem before. This soil is treated with lime, dolomite and gypsum in a complete organic fertilizer mixture containing kelp meal. Nearby tomatoes under same conditions have absolutely no BER. I have lately discovered fungus growing on the new fruits underneath the dead blossom. It seems to destroy the stigma first. It hides under the dead blossoms, and is very difficult to see if it gets wet. I can easily believe that I had missed seeing them due to clumsy handling and poor eyesight. Here's a picture: I think this is the cause, but what exactly is it? And why only here and now?