INSECT ON A SUNFLOWER BUD

Although I don't grow sunflowers in my garden, the birds do.  They drop seeds from their feeders all over the place.  One particular seed managed to germinate in my garden border quite unnoticed until it was about 18 inches in height, at which point I felt it unkind to destroy it.  I think it's a little late but it is now developing a fat bud.  I took a macro photograph of that today and discovered a strange little insect lurking there.  I have no idea, at this point, what it is. 

Sunflower bud with little insect - macro photograph