So, I´m growing some plants at the local Community Garden and I was mortified by something I saw when I was checking my plot earlier today. A lady is growing Kale in a bed right next to mine, and her kale plants were looking pretty grim, with all sorts of zombie symptoms, such as grey discoloration and wilting. We´ve all seen the TV programs, right?
So, upon closer inspection, i noticed these shitty tiger-striped bugs all over her kale. There were probably about a dozen or more within clear view; who knows how many more were lurking among the foliage? Most of the ones in plain sight were joined at the azz, and were clearly banging one another. I immediately panicked, and checked my plants for any sign of a similar infestation. Fortunately, i saw none on my chiles, nor on my wife´s tomatoes...
Now, wanting to be neighborly, i went back to the kale thinking i smash those little scumbags for the other gardener, and for the better good of the Community Garden. My wife said i ought not to; her line of reasoning was that we shouldn´t muss with another grower´s plot, and we might do more harm than good. I suspect she was more concerned that I was going to plaster myself with bug guts before getting back in her car and heading to the gym, but i acquiesced, vowing to do some more research on the critters and the level of threat they represent.
Turns out, the tiger striped bugs are Harlequin Bugs, Murgantia histrionica. These are a kind of stink bug, and they can be pretty brutal. Apparently, they prefer to eff with cruciferous vegetables, which might explain why they were mobbing her kale but leaving our nightshades well enough alone, but my research suggests that they WILL move onto the tomatoes and even the peppers once they´ve exhausted the kale. I´m panicking quite a bit about these things, now.
Example pic below; warning: NSFW.
So, what do y´all think? Should I have crushed the bugs I saw? Would that be a step across some sort of line; is it a violation of gardening manners? Personally, I be grateful if someone squished pests on my plants; further, i be thankful of anyone who worked to keep the entire Community safe from these things. Should i go back and stomp´m tomorrow? Or should I let the other grower deal with them herself, and worry about my plants if/when they migrate to my beds?
Thanks in advance for any advice or perspective.

So, upon closer inspection, i noticed these shitty tiger-striped bugs all over her kale. There were probably about a dozen or more within clear view; who knows how many more were lurking among the foliage? Most of the ones in plain sight were joined at the azz, and were clearly banging one another. I immediately panicked, and checked my plants for any sign of a similar infestation. Fortunately, i saw none on my chiles, nor on my wife´s tomatoes...
Now, wanting to be neighborly, i went back to the kale thinking i smash those little scumbags for the other gardener, and for the better good of the Community Garden. My wife said i ought not to; her line of reasoning was that we shouldn´t muss with another grower´s plot, and we might do more harm than good. I suspect she was more concerned that I was going to plaster myself with bug guts before getting back in her car and heading to the gym, but i acquiesced, vowing to do some more research on the critters and the level of threat they represent.
Turns out, the tiger striped bugs are Harlequin Bugs, Murgantia histrionica. These are a kind of stink bug, and they can be pretty brutal. Apparently, they prefer to eff with cruciferous vegetables, which might explain why they were mobbing her kale but leaving our nightshades well enough alone, but my research suggests that they WILL move onto the tomatoes and even the peppers once they´ve exhausted the kale. I´m panicking quite a bit about these things, now.
Example pic below; warning: NSFW.

So, what do y´all think? Should I have crushed the bugs I saw? Would that be a step across some sort of line; is it a violation of gardening manners? Personally, I be grateful if someone squished pests on my plants; further, i be thankful of anyone who worked to keep the entire Community safe from these things. Should i go back and stomp´m tomorrow? Or should I let the other grower deal with them herself, and worry about my plants if/when they migrate to my beds?
Thanks in advance for any advice or perspective.