Beginner Gardening: What's wrong with my cucumbers?, 1 by KYtransplant

KYtransplant wrote:
They were doing so well, then suddenly they starting turning yellow/white and crunchy (the leaves, not the cukes). They're also full of holes. There were lots of new blooms and new cukes starting to form, but they're drying up). I see some tiny brown things on them, shaped sort of like a flea. They also hop like fleas. Not sure if that's the problem though. Insecticidal soap didn't help, so my husband sprayed some Sevin on them a couple days ago. Too soon to tell if it helped. (Husband thinks they're just dying a natural death, but I'm convinced something is sucking the life out of them). Any advice?