Explanation of Names
Neochetina bruchi Hustache 1926
♂ 3.5-4.5 mm, ♀ 4.1-5.0 mm(1)
native to South America, introduced to the US, released in SC-FL-AL-TX & CA to control waterhyacinth
Eggs hatch in 7-17 days, depending on temperature. Three instars, larval stages take from 36 to 90 days; reports vary. Larvae feed and develop in the petioles. Fully grown larvae move to the water, build a cocoon and pupate near roots, from which they probably take oxygen. Adults are nocturnal. Females lay about 200 eggs.
first introduced in FL (1974)