Some wasp on some thistle

I keep trying to learn the types of thistles growing around my city. So far my success rate has been low. I'll keep trying though.

When I was a kid, sixty years ago, we called this plant "stickerbud." I leant into it to take this picture.

I walked a kilometer from it before I realised I had a half-dozen buds stuck to my clothes. It was living up to its name. Later, I found more and an itchiness from the spines getting under my shirt.

Only when I got home did I realise there was an insect on one of the stickerbuds. A friend tells me it is one of the many wasp species around here, and that it seems to have been depositing eggs in the seed cases. Sneaky.