NATION IN BRIEF : TEXAS : More ‘Killer’ Bees Caught Near Border

Three more swarms of “killer” bees have been destroyed in the Rio Grande Valley of Texas. The main concentration of the insects remains about 75 miles south of the border in the Mexican state of Tamaulipas. Researchers estimate it will take the bees up to a year to reach the United States in force. Officials said the new swarms were found at trapping sites near Roma, Brownsville and Progresso, Tex., just north of the U.S.-Mexico border. The Africanized--or “killer”--bees are an aggressive hybrid that escaped into the wild from a South American laboratory in 1957. The insects, which attack and kill other bees, animals and occasionally humans, have been moving gradually northward.