It has to be an introduced species that people will be motivated to introduce....
Charles V does NOT sell Moluccas to the Portuguese. He sells them the Plata and Paraguay to the head of navigation of the Pilcomayo River instead. The Portuguese thus gain access to the Bolivian yungas higlands where coca is grown and discover coca. The Portuguese not only introduce coca leaves but coca growing to Africa via Mozambique (since this variety of coca grows in savannah country) and especially to India via Goa and to East Timor. From East Timor, Makassan traders spread coca cultivation all over the Indonesian archipelago.
Brushtail possums are brought to Louisiana as a fur farmed animal from Australia in the 1890s. They get loose in 1899 and spread all over the Southeastern United States, "A pest of plague proportions"
Links:
http://www.doc.govt.nz/upload/documents/science-and-technical/everybodyspossum.pdf
Also from Australia, red back and funnel web spiders get to the United States in loads of wood and spread. Along with a particularly voracious species of termite found throughout Eastern Australia that can eat living trees and finish an entire house in one season.

edback Spiders are found throughout Australia and are common in disturbed and urban areas.
tification
Coptotermes acinaciformis is a subterranean termite. These termites are very destructive. Soldier termites produce white milky liquid from their mandibles and are aggressive. They are found underground an avoid the light. They may travel underground up to 100m from the colony in search of food.
Size
Body size 4mm -6mm
Habitat
forest, urban areas with eucalypt gum trees
Food
cellulose from wood
Breeding
Coptotermes acinaciformis build their nest within the base of a tree or underground. A colony may have over a million termites. They also build subsidiary nests away from the main colony. In buildings, subsidiary nests may be built in wall cavities, provided there is access to moisture (e.g. from leaking water pipe).
Range
found throughout Australia except Tasmania
Notes
Coptotermes acinaciformis is highly destructive to buildings and timber structures. This is the most widespread termite pest in Australia, and is responsible for over seventy percent of serious termite damage to buildings. Australia. If you suspect that you have these termites, arrange a termite inspection with a reputable termite exterminator company.
Classification
Class:InsectaOrder:IsopteraFamily:Rhinotermitidae Genus:CoptotermesSpecies:acinaciformisCommon Name:
Subterranean Termite
Relatives in same Genus
Subterranean Termite (C. frenchi)
Has one of the world's deadliest spiders been found in Britain? 'Funnel web' spotted outside a garden shed in Gloucester
By
Daily Mail Reporter
UPDATED: 03:46 EST, 9 August 2010
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One of the deadliest spiders in the world has been captured on camera in the wild in Britain - outside a garden shed in Goucester.
Les Fryer, 71, saw a highly poisonous funnel-web - the first time the species has ever been found in Britain.
The pensioner spotted the killer arachnid after visiting his garden shed to get his lawn mower and wife's bicycle.
Creepy crawly: Video taken by Les Fryer from Brockworth of what he believes is a deadly funnel web spider in his back garden
Read more:
http://www.dailymail.co.uk/news/art...nel-web-spiders-Gloucester.html#ixzz2XUdAf73r
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