Often mistaken for wasps (they don’t have a pinched waste though), hoverflies are most definitely a FRIEND and should be wholeheartedly encouraged by anybody hoping to garden organically.
Their larvae are voracious devourers of aphids (greenfly, blackfly) but they can easily be mistaken for little caterpillars if you’ve never seen them before.
Known as beneficial insects, hoverfly can be encouraged into gardens by planting flowers that they are attracted to. These would include dill, borage, coriander, lavender, nasturtiums, poached egg-plant, Phacelia and Calendula (pot marigolds) to name but a few.
So next time an insect buzzes around you, don’t automatically swat it out-of-the-way. Take a few seconds to have a look and see if you can identify it.
Note: Insecticidal soaps don’t discriminate…. they will kill beneficial larvae too.