42mm long waisted fly/wasp. Fell from a tree (species unknown) in an urban environment.
No interactions present.
Woodwasps lay their eggs generally in freshly sawn logs, generally about 3cms deep.I think they take about 3 years to develop.
Despite what you might expect from the (perfectly correct) English names, U. gigas is neither a wasp nor a fly, but a sawfly. As such, the 'tail' is not a sting, but an ovipositor.
Interestingly, even when one knows this, it is astonishing how much mental effort is required to pick up unprotected a large yellow-and-black insect with an evil-looking spike at the rear. Some atavistic instinct still lingers!
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
I worked in a woodyard for several years and tried to teach my fellow workers that these beautiful insects are harmless.
Unfortunately, one of my colleagues felt something digging into his shoulder one day, and when I looked, it was one of these, apparently probing his shoulder through his shirt to find a suitable place to oviposit.
Whether his being covered in sawdust made her think he was a living tree I can't say.
I've only seen this spectacular insect a few times, but once I took a live specimen to a kids' bug-hunt event, and they were very impressed at my fearlessly picking up such a scary-looking creature!
Entomologist and biological recorder
Lat/Lng: 53.2, -0.6
OS grid ref: SK9872