1st a grumpy note: This is your 3rd post about the same topic-- it's very challenging for us to keep up with folks who are a moving target. Okay, grumpy off. The "white" may be powdery mildew. But I can't determine if it's powdery stuff or the normal silvering of some leaves. (The bright sun interferes) The hole at the edge of the leaf in the 1st image -- Is that the only leaf that's damaged? Or only a few? If so, not problem. The holes in the other leaves are small and few. The rounded ones may be from critter bites. The lines and angular tears may be mechanical damage. Overall, not to worry.

I'm going to guess from your description that it is cucumber mosaic virus but this is just a guess. Do they resemble these? The virus is readily transferred by aphids and survives on a wide variety of plants. Varietal resistance is the primary management tool, and eliminating weeds and infected perennial ornamentals that may harbor the virus is critical. How do your leaves look? Are they solid colored?

Spraying plants with bug juice, or leaving a can of dead bugs on display, can't hurt, and probably helps. I had read that the JB sends a scout and then the scout releases a scent telling others it's a good spot. My experience last year goes along with that. I was in the garden, one arrived and I hadn't yet set up my can. I was working on putting my glove on, but before I could, two more came, started sexing on a leaf, and then a bunch more piled on. I ran and set up the can and started flicking them in and kept the can at hand, but also on display in case there was some kind of scent of death. The first year I had JB, I got the scout and stepped on him, then left his body on the ground. I definitely think there's something to this, although I've never been able to catch cucumber beetles quickly enough. They're tricky.

OK, I too am suffering under the assault--this is a new pest for me; never had them before yet this year, they're here in droves. Here's what I do. I shake them out of the blossoms early in the morning and into my hand and then just roll them between my fingers to squash them. (Let me add that killing ANYTHING is a highly uncharacteristic thing for me to do, but these guys are decimating my plans--not just flowers, but the leaves.) I have found them on zinnia leaves, my cukes, pumpkin, squashes and cataloupes. I have found them on my sunflowers as well. However, they clearly prefer the pumpkin, cukes, squash, melons. My observations are as follows: (1) They congregate inside blossoms, as well as under leaves (look for the ones will a zillion toothmarks!!), inside the new leaves before they have unfurled, and at the base of the plant, at the soil-line; (2) when disturbed, they generally FIRST drop to the ground, THEN fly off; (3) when they drop to the ground, they often head to the base of the plant. They are not that fast. It is like a game to catch and roll them bet. my fingers. I count while I play this game. I have found that a few fly off, but I manage to get most or many on any given "murder spree." I catch the majority of them when the fall to the ground during my attacks. Some I get on the blossoms and on leaves. A quick squish, a heartfelt apology to the bug, and on to the next victim. They do seem more lethergic in the morning. I manage to get 50-100 per day, with 3-4 outings at various points in the day. I have been doing this for over 1 week. I think I MAY be making a dent in their population. I do seem to be seeing fewer than a week ago...but perhaps this has something more to do w/ their lifecycle than my murderous efforts.