CENTRAL FLORIDA CRITTER OF THE DAY: Syrphid Fly (Meromacrus acutus)
Also known as Hover flies, flower flies or drone flies, they are bee/wasp mimics who pollinate. Some syrphid larva prey on aphids while this particular species is one of the aquatic “rat-tailed maggots” that grow by eating detritus. It seems to be a good mimic of a yellowjacket, similar in size.
Lifecycle photos: http://bugguide.net/node/view/166995
Shown on Florida Native Plant GROUNDSEL TREE; SEA MYRTLE (Baccharis halimifolia), a.k.a. Saltbush