Insect eggs found within a rush. About 1-2mm in length and lozenge shaped. Varying shades of yellow between eggs.
No identification made yet.
No interactions present.
Possibly the eggs of a bush-cricket. Both Roesel's Bush-cricket and the Long-winged Conehead are known to lay eggs in the stems of rushes.
I think that you could be on to something there, Michael. Benton (Grasshoppers & Crickets New Naturalist p.69) says that the eggs of bush crickets vary in shape according to ovipositor shape and where they are laid. "The eggs of the short-winged conehead, for example, are long and narrow, and inserted lengthways within the plant stem"
There are a couple of leaf miners it might be as well (though I favour the bush cricket theory).
1. An agromyzid fly Cerodontha luctuosa (NB this is found in the stem above the flower - so could be eliminated if these eggs were lower down)
2. A moth Elachista scirpi
University of Edinburgh and Biodiversity Observatory (OU)
Lat/Lng: 51.6063, -1.9739
OS grid ref: SU019897