Am I correct in my assumption that this could be Trichryis cyanea? Picture today, The Netherlands, southern part, my garden. Is it possible to say if it is a male?
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I would say male, beacuse the anal margin seems to be subtruncated. However, it could be an optical effect. To be sure, we need an other picture from the back side.
Many thanks...... they are very active in these days. Temp is above 25 degrees and many Tryoxylon spec. (and Pemphredon) are active in my garden. Pseudomalus auratus (your study object????) and Chrysis ignita are also very active... I'm still waiting for Pseudomalus violaceus.....