Missing Micro's

The area around my lunchtime patch is literally awash with both nettle sp and buttercup (ranunculus) but both Nettle Tap Anthophila fabriciana and Cocksfoot Moth Glyphipterix simpliciellaare nowhere to be found.....Both are extremely common but strangely absent, and I'm getting fed up of bending down and staring into bright yellow flowers. It's making my eyes go funny.