Well it still hasn’t warmed up, but at least the sun is out, so it’s quite nice. Today we are aphid-comparing. Here we have a greenfly and a blackfly on a galvanised fence round the back of the warehouse. Firstly, I bet you never realised the greenfly was such an ugly beast close up – the black fly is quite smooth and smoothly-contoured by comparison. And their heads are completely different shapes.
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