Galerucella (genus)
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Galerucella Crotch, 1873
This genus of leaf beetles is widely distributed, especially in temperate regions of the northern hemisphere. It contains a mixture of monophagous and polyphagous species. Several are considered pests and can cause significant damage to their host plants, up to defoliation. They attack for example forest trees like the brown willow beetle or strawberries. Others are beneficial and are specialized on certain types of weeds like purple loosestrife (see the page on Galerucella weed bioagents).
The beetles over-winter as adults and emerge during spring, when they mate and lay eggs. The larval and pupal development takes around 1-2 months and there may be several generations per year.
Currently, the following species have been entered into the system:
