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Are the flagella curved enough at the ends for this to be a male?
The specimen is a male for sure - the extent of the yellow facial markings and the antennal tips show this clearly. What is also clear is that the mid-femur doesn't seem to have the spines on it that give the species its name (although this is not a perfect angle to view this character).
I suspect this may well not be an Odynerus at all
A transverse keel (I think) on the front of the 1st ab segment and lack of longitudinal notch at rear of the same segment would suggest Ancistrocerus.
Thanks for the comments
I had a look at
where can I find the spines on the mid femur Stuart, I can't see any on this photo, bands on my photo look thicker perhaps this is also another difference !
The spines are underneath and completely hidden when viewed from on top
Lat/Lng: 52.1, -3.4
OS grid ref: SO0451