A fly you want in your garden

• There are 6,000 hoverfly species and 200 genera worldwide. (Jacob Langston/Orlando Sentinel)

• A hoverfly gathers nectar from this rock purslane. (Courtesy of UC Regents)

• Hoverflies engage in Batesian mimicry, a type of identity theft that's done to fool predators. (Photo by Kathy Keatley Garvey)

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There are 6,000 hoverfly species and 200 genera worldwide. (Jacob Langston/Orlando Sentinel)

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Last summer...