Two very different flies have caught my attention in the last few days, for different reasons. The first fly is not actually a fly at all, but a member of the order of 'true bugs'. Proliferating at a stupendous rate during the current warm weather, Greenfly are the gardeners' nightmare. The problem is exacerbated by their extraordinary ability to multiply. Female aphids can give birth asexually, to young aphids which already have their own offspring, growing within them. So, in effect, a 'mother' aphid gives birth to her daughters and granddaughters at the same time.