Here is an insect pest that has devastated my muskmelon crop several times now.
This white grub eats up the roots and bores the stem causing death of all plants.
This however does not look line the melon vine borer - the vine borer seems to have a clearly marked brown head while this one doesn’t.
Also does not exactly look like the grub of cucumber beetle, but I almost believe this is the offender in question.
Any thoughts appreciated, thanks.