Vespula Pensylvanica - Invasiveness

Invasiveness

In the Hawaiian Islands and other areas V. pensylvanica has been recorded as an introduced species. Attempts to eradicate this species from Hawaii using the toxicant bendiocarb began almost as soon as a population was discovered there in 1977. A 1988 paper revealed that V. pensylvanica was successfully attracted to canned Figaro brand tuna cat food laced with micro-encapsulated diazinon as well as, to a lesser extent, the same cat food laced with amidino-hydrazone. The color of the dispensers from which the bait was offered proved critical; translucent white dispensers were most effective.