Public health officials, quarantine workers, farmers and scientists around the world will have to pay greater attention to preventing infestations in stored foodstuffs and animal products.
Insects are widely known to attack not just stored grains but wool carpets, corks in wine bottles, dried fish, chocolate, savoury biscuits, dog biscuits, dried baby food, cakes, paper, clothing, hides and skins.
"A box of chocolates containing a single moth larva is worse than worthless," Mr Rees says. "It may result in a fine from the environmental health department, negative publicity and lost consumer trust in a brand, and legal action."
Mr Rees says that the introduction of an insect to poor farming areas of Africa is responsible for destroying stored grains and causing widespread hunger.
"Since the early 1980's, the poorest farmers of sub-Saharan Africa have had to cope with the relentless spread of the larger grain borer, a pest inadvertently introduced from the Americas," he says. "Its recent arrival in Africa has caused considerable additional hardship for many communities."
Dr Rees is a post-harvest entomologist with more than 20 years' experience working with stored product insects in a wide range of storage systems from subsistence agriculture to the most modern bulk handling facilities.
He is the author of a new illustrated guide to the world of these pests, Insects of Stored Products, which has been released through CSIRO Publishing. The book enables specialists and non-specialists to identify the major pests of stored products found throughout the world.