US Customs at Tacoma spots gypsy moth eggs on two box ships from Japan

US CUSTOMS at the Port of Tacoma, tipped off by Japanese authorities, has intercepted four gypsy moth egg masses aboard two containerships from Japan, one case spread over three decks.

Authorities say the greatest risk of ship infestation is in Japan, China and Korea from June to November when the insects take flight, and the female flying over 25 miles, eating leaves of 500 types of trees and plants.

Customs and Border Protection (CBP) said egg masses were removed and the affected areas were treated to kill remaining eggs, reports American Shipper.

Canadian and American officials say progress in eradication has been made over the last three years because of an education programme for seafarers on how to spot the insects as well as tighter certification for ships.