Is it a Bee? Is it a Wasp? No, it's a Cuckoo!!

Following on from the previous post about wild Bees this post is about their cuckoo's.
Some bees are cuckoo bees, that is they can't be bothered to do all the hard work of building a nest for their eggs, or providing pollen to feed the grubs. No, these bee's have got it well sussed, they just lay their eggs in the nests of other bee's and let the other bees do all the work.
Hence the name 'cuckoo bee' after the lazy bird adapted to live by the same principals!!!!

There are may Cuckoo bees around, even some that look like bumble bees!!
In the garden 2 doors down the road we have a healthy population of hairy footed flower bee nests, constantly worried by their cuckoo bee Melecta albifrons

Many Cuckoo bees come from the family Nomada, and these bees look much more like wasps than bees!

This is Nomada goodeniana

I am sure you will agree, very wasp like! But not a wasp believe me if it was I wouldn't be holding it!!!

There are many species of Nomada bees, all of which look fairly similar, and who's identification drives me to distraction!

This one with no yellow spots on the thorax could beNomada leucophthalma 

This one is tiny, (it is sitting on a lesser celendine petal), and I am not sure of id.