Nature Reserves, Wildlife Insects in Gunnersbury Triangle 28 May 2015 Ian Alexander Hoverfly, picked out by a sunbeam in the woods Yellow Iris with pollinating bumblebee Sawfly Macrophya (Tenthredinidae) on Hogweed Sawfly Macrophya on Hogweed Vetch tendrils and flower, using flash Cuckoo Bee Coelioxys (Megachilinae)