Clubiona terrestris

This was found while moth trapping. I don't tend to do the spiders I find while moth-trapping but this one sat still long enough for a half-decent photo and I could tell it had enlarged palps so was likely an adult male, meaning I stood a fair chance of identifying it. Moreover I recognised it as Clubiona and I knew there were at least one or two very common species that I'd not yet identified. When I looked at my photos I noticed something over the rear of the cephalothorax which I initially took to be one of its legs awkwardly positioned, and potted it up for subsequent examination. When I came to do so a couple of weeks later I was surprised to find that the spider seemed much smaller than I'd remembered it - and then I noticed there was a live adult wasp in the pot and it all started to make sense. The awkwardly-positioned leg was of course the larva of a parasitic wasp (which I subsequently identified as Schizopyga frigida) and the spider looked so small now because the wasp larva had eaten virtually all of its abdomen. The palps were still intact and enabled me to identify the spider as terrestris which I believe is an extremely common species.

male Clubiona terrestris showing remains after abdomen eaten and palp (3 views), Cranwich Camp (Norfolk, UK), 21st March 2025