I really like some of the attitudes expressed here....
I've actually wild-collected predatory insects a few times... as Teejay and Ikeepfish have indicated, the predatory types have a wholly different appearance and demeanor than the pests... Let's face it, pests need all the style and grace, all the speed and stealth and armament... to sneak up on a leaf (ie.: none). They tend to be sluggards.
Despite the predators' trademarks, i have mistakenly introduced MORE pests, once or twice (nuclearDays, i may need to borrow your brains next Spring, or at least your 'entomology lobe'...).
However, 'tis a far, far better screwup to make than to kill off such fine beasts as Ichneumon wasps.
I read "Silent Spring", by Rachel Carson, as a boy... did you know that malathion and other organophosphorus pesticides are a direct result of Nazi Germany's nerve gas research during WWII ?
Queequeg, i've enjoyed some of the posts you've made, and this isn't any kind of personal attack... but you're wrong here. Converse with the other fellows who've already posted on this forum: they're clearly better informed than i am, and may be better able to explain the situation.
That fierce-looking weird and tiny 'bug' is one of the good guys.