Whose eggs?

Whose eggs?

Observation - Whose eggs?. Description: Eggs laid neatly on underside of various leaves all in the same area an inch or two above ground level. The eggs are shaped like tacks in that they are on stalks and have a more bulbous but slightly flattened top. They are orange, which attracted me to

Eggs laid neatly on underside of various leaves all in the same area an inch or two above ground level. The eggs are shaped like tacks in that they are on stalks and have a more bulbous but slightly flattened top. They are orange, which attracted me to them. I though it was rust, but on closer inspection saw that they are probably eggs. Laid in lines or maybe along veins in the leaves.

The leaves include wood avens and valerian, so not really host specific.

For scale the wood avens leaf in the first picture is about 3cm across.