Unknown pest, unknown shrub!

I have an infestation in this flowering shrub - sorry, don't know the name. The effect is to bleed the colour from the flowers; the leaves are mottled and 'cupped'. I noticed some tiny insects on the backs of several leaves, pure white, shaped like an aphid. Is there anything else I can do besides removing the affected branches (there are many)?

For what it's worth, the shrub is planted directly under a large ornamental, which does not seem to be affected.

 

#3 is a Manitoba Maple Acer negundo.

 

Oh dear, Box Elder, described in my book as a 'weed tree', among other virtues. Never mind - it provides beautiful shade in the summer and leafless, lets the light flood into my kitchen during the winter. Thanks.

 

Acer negundo gets a bad rap. It is invasive in Australia, and I see it as listed as weedy in a reference for NE USA, but I don't think that's the case for BC. I suspect some of the attitude is that there are superior ornamental selections, but when it comes to ornament, part of it is whatever you choose/permit to grow for yourself.

 

I have seen a Varigated 'A.negundo' and know of 2 amazing specimens in North Vancouver that would put a Dissectum to shame any day.

#1-2 look like Spirea.

Could be an Aphid as Spirea gets them,but most likely a type of scale .

 

I'm pretty sure it's aphids, time to get out the soap. Thanks everyone.