Do I have lupin aphids?

So I planted this lupin about a week ago and it seems to have already been attacked. I presume these are aphids? They're mainly on the flower but some have also found a home in the leaves. Should I just cut the whole plant back to soil level? I bought it in flower so not sure it would grow back this summer? Are they a risk to other surrounding plants? 




"If you have a garden and a library, you have everything you need"
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They can be a nuisance - especially with the soft new growth. Getting on top of them just now will help though.
I live in west central Scotland - not where that photo is...
That's what you would do anyway. It will grow more. They thrive on being deadheaded
I live in west central Scotland - not where that photo is...