Chrysis comparata - North Portugal

What strikes me concerning this specimen, is the rectangle on the thorax. What species?
Thanks.
Kurt
PS. It took me 7 attempts to upload and recrop the image(s). I don't know how to resize (save in lower resolution) my images on my iMac. Observed.org has software to resize uploaded images automatically. Suggestion for this magnificent site?
Thanks.
Kurt
PS. It took me 7 attempts to upload and recrop the image(s). I don't know how to resize (save in lower resolution) my images on my iMac. Observed.org has software to resize uploaded images automatically. Suggestion for this magnificent site?