This image shows off two features on her right fore-leg, near the bottom of the picture.
1. - The prominent tarsal rake spines that are characteristic of all the female wasps in the tribe Prionychini and some of the tribe Sphecini.
2. - The femur has a thin red line, on the inner edge. This is only visible from some angles and very hard to see without a close-up in bright light.
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Some similar, reddish highlights are visible on the male: ♂