Yarrow insects...

So I know yarrow is supposed to be good for attracting beneficial insects and pollinators but that's about as much detail as I usually see when I read about it.  I've been watching the plants in my garden for what kinds of insects each attracts but can't figure out what these critters are that I see on my yarrow plants.  Does anyone know what these are?  They don't seem to be doing the plants any harm and I wonder what their diet might be.

The first picture is on a coastal yarrow which has larger flowers and the second picture is of a wild yarrow that I transplanted from the lawn which has smaller flowers but a denser population of these bugs.

Yarrow is an essential companion to many herbs, and especially mints.  Herbs (and mints) grown with yarrow as a companion will produce much more essential oils (hence, more flavor/aroma).  Yarrow is like a supercharger for most herbs...double the flavor!

not sure what your bugs are..I have a lot of yarrow growing here and actually just built a small raised bed (15/x4) over a yarrow mowed lawn with cardboard, apple wood, horseradish leaves and dirt and clay..wish me luck with that.

A 'bug' is what they are .
Sorry, unhelpful I know!
I suppose I mean there's so many tiny, unnamed things wandering round my garden, that unless I notice them for a particular reason, like the tiny parasitic wasps that really love yarrow (and cabbage white caterpillars...)they just kind of do their thing.
Good luck Brenda, if you wanted to keep the yarrow out of the bed...
I did some major sheet-mulching with cardboard and very heavy chip to knock off a hard to kill lawn.
Grass gone, yarrow flourishing! That's fine with me there, but I don't think I'd want it absolutely everywhere.

Haha Leila I appreciate your post but it's a pretty discouraging one   My attitude is much different than yours - if it's in my garden in any appreciable quantity and I don't know what it is I want to know!  I want to know all the interconnections I possibly can in order to have a better eye for what is really happening in the garden.

Brenda - good luck with your new bed   Sounds like it'll be nice.

ANYHOW I actually did track down what these bugs are - they're carpet beetles.  Apparently they can be a pest indoors as they feed on natural fibers, hairs, various animal excretions, carpets, etc.  They're feeding on pollen on the yarrow though and probably providing a food source for more parasitic wasps   They like to get on white/cream/yellow colored flowers and I've seen pictures of them online on yarrow specifically since I now have a name for them 

Yeah, Nathan, don't know why I posted that rubbish at all...
I am very much in favour of questioning all aspects the environment:
I must have been feeling a bit flippant or something!