Elipsocus abdominalis (?)
Apart from a few female Elipsocus hyalinus, most of the Elipsocus I catch are males, and unfortunately males are often impossible to identify to species. I have suspected abdominalis based on apparently unmarked abdomens, but this is hard to assess on dried specimens, which mine usually are by the time I get to examine them. I had previously featured such a male on this page, but having now examined a lot more male Elipsocus I've decided to put all the males which I cannot identify on a separate page for Elipsocus sp.
This one was a female, and as such it should have been identifiable. Stupidly I left many of the barkflies I collected in 2020 on a sunny windowsill for several months and they all faded to such an extent that the wing markings were impossible to make out. The live photos suggest a clear dark patch around the areola postica which should point to either abdominalis or pumilus. The epiproct doesn't appear to have the dark sides that are shown by Elipsocus pumilus, and so I think it must be abdominalis. However I think I should wait for another, and not leave it in the sun for months this time...
female probable Elipsocus abdominalis showing epiproct, North Elmham (Norfolk, UK), 18th August 2020