BIO-CONTROL
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The "black dot" flea beetle was first released in Canada in 1983 with great success. 

A decrease in leafy spurge plant density is the first indication of insect impact. 

Over a long period of time,  the larvae will destroy  lateral roots and the taproot. 
Native grasses can then revegetate the land. 
The "black" flea beetle was first released into Montana in 1987. 

This species does well in moist areas with loamy soils as well as sunny, dry locations.

Adults feed on the leaves and flowers. 

Larvae feed in or on the root hairs and young roots.
The "brown-legged" flea beetle was released in ND in 1993.

Preferred habitat is moist to wet loamy soils.  Dry sites are considered unfavorable.

Very similar to czwalinae except that the hind femora is brown instead of black.

All of these beetle species feed only on leafy spurge.

Leafy Spurge Bio-Control Agents.