Happy face spider (Theridion grallator)
~3mm long, alive and running around :-)
Horned Matchhead Beetle (Pheidoliphila carbo)
www.ellura.info/Blattodea-Coleoptera-Hemiptera.html#Pheidoliphila-carbo
Image matched to SA Museum holotype specimen:
https://biocache.ala.org.au/occurrences/43b762e7-52bf-48e0-97a5-eedbcc300a0d?fbclid=IwAR3rncWquxdlHMSEZ69yadUq15H7Nw2vZ_0OaZiYXddYj7dZ4BQvvJT54i8
Attracted to the bee killed by the spider
San Diego County, California, US
Atop a dead California Gull.
Sarcophagidae ?