From DaylilySLP: "Oncopeltus fasciatus are invasive in the garden. Here they are devouring my Asclepias tuberosa."
3rd Place with 82 points:
From smallwonders: "European Wool Carder Bee - male (Anthidium manicatum) - This European bee was found in Pennsylvania in 1995 & has since migrated to other states. The males are highly aggressive and may have a negative impact on native Anthidium species & the native plants they pollinate."
Runner Up with 73 points:
From Moonpassion: "The Brown Marmorated Stink Bug. Origin China and Japan. I live in Florida zona 10a."
Runner Up with 70 points:
From Moonpassion: "Metallic green hover fly. Zone 10a, Florida"
Runner Up with 61 points:
From smallwonders: "Narcissus Bulb Fly (Merodon equestris) - Introduced from Europe to North America. Eggs are laid between the sheath & stem of each bulb. Once the eggs hatch, the maggots will bore down through the outer bulb and eventually bore directly inside the bulb. The maggots will develop fully inside the bulb, but will not pupate until the following spring. Bulb flies have few natural enemies, so they are not easy to control.