Insecticides can be used to limit leaf hopper feeding on nursery stock and as soon as infected plants are seen, they must be removed.
12.
More common is the black-and-yellow jumping spider, or the sheet web spider, which veils the lettuce with its delicate webbing and snares leaf hoppers.
13.
The bacterium " S . citri " is initially acquired by the leaf hopper through feeding on a plant that has already been infected.
14.
One fascinating example is the potato leaf hopper, a bug just one sixteenth of an inch long, that migrates between Georgia and New York.
15.
The leaf hopper is described as a small insect, 3 3.5 mm in length, which is often greenish yellow, tan or olive in colour.
16.
Therefore researchers conducted electrical penetration graph experiments of leaf hoppers in which they wired beet leafhoppers to an EPG machine and characterized the types of waveforms produced.
17.
This may also be backed by the fact that adult leaf hopper do not change colour once they have matured regardless of the temperature of their environment.
18.
Some researchers believe that these changes in colouration occur according to the surrounding temperatures of the last leaf hopper instars as this is the stage during which wings develop.
19.
The tiny leaf hoppers launch themselves into the storm front and can make their thousand-mile journey flapping along with the help of hundred mile an hour winds in just 36 hours.
20.
The study also found that the numbers of host plants that were infected with " S . citri " increased with the numbers of infected leaf hoppers that were feeding on these plants.
