From ginger749: "This Caterpillar is a real threat to humans. Each and every one of those barbs will sting at three times the intensity of a common Garden Bee."
2nd Place with 153 points:
From mellielong: "Cabbage White butterfly in Lincoln County, WV"
3rd Place with 145 points:
From smallwonders: "Marsh Crane Fly - Native to Europe and was probably introduced to North America via infested soil media. The larvae, known as leatherjackets, feed on roots & crowns of turf grass & can be problematic. This feeding can cause patches of lawn and turf to die leaving bare soil. Grand Rapids, MI Zone 5b"
Runner Up with 145 points:
From smallwonders: "Tachinid Fly (C. concinnata) - Native to Europe, this tachinid was introduced to the U.S. as a biological control of gypsy moths. This introduction has failed due to the fact that this fly has over 200 host species & has attacked many native species, including threatened ones.(i.e. - Giant Silk moth) Grand Rapids, MI Zone 5b"
Runner Up with 116 points:
From DaylilySLP: "Japanese beetles (Popillia japonica) Japanese beetles munching away.
Zone 5a, Milford, MI
Runner Up with 76 points:
From mygardens: "This Northern Mole Cricket is generally not found in colder areas such as this zone 6b, New York. However, with the global warming, it eats the roots of our plants and has made it impossible to grow vegetables in our vegetable garden. We have to plant in large pots & stuff fine netting in the holes."
Runner Up with 74 points:
From dragonfly62: "This is a "Dragonfly" which can be invasive is some areas. We are in zone 5."