I am go to say best guess male.....I know my female has a definitive pear shape, which the males can seem to have depending on how they are sitting as well if they are fat. Although the call can be considered similar to crickets it would still be slightly differant. Have you tried to play a recording of a call to it to see if you can entice a call from it.
I have played the call but don't get a call in response. I'll keep at it with the call to see what happens. I sometimes here longer chirp from the crickets, but maybe I am hearing a call. It does it a few times and stops.
I have two of your videos as well as a couple others going at the same time. It came out of hiding, but didn't respond. I'll keep playing all of the vids to see if I can work him into a frenzy. Thanks everyone.