Any idea what ths is?

Any idea what ths is?

Observation - Any idea what ths is?. Description: Really stumped with this , not even sure what group to put it in. The first two photo's show sites about 100 yards apart by the River Inver. As you can see both were attached to grass stems.

Really stumped with this , not even sure what group to put it in. The first two photo's show sites about 100 yards apart by the River Inver. As you can see both were attached to grass stems.