The MNM took an entire month off, but you guys are still sharp as a fossorial foreleg. What was that strange entomological extravagance?
All ten points go to Kojun, who took less than 20 minutes to converge on the correct answer: the image showed the antenna of an ant-nest beetle in the ground beetle subfamily Paussinae. I’ll also give 2 points each to Ainsley and Amanda for the genus, and one to Ted MacRae for providing extra anatomical detail.
Also, thanks to paussine expert Wendy Moore, who kindly identified the genus via email.