Garden Visitors (Insect Sunday Edition): Blow fly on parsley (probable Lucilia sp., possibly L. sericata, the common green bottle fly.), in Portsmouth, Virginia.
The blow flies are attracted to carrion and dung - and to carrion-scented flowers - and are famous for their frequent guest appearances on CSI: Crime Scene Investigation. Forensic entomologists observe the flies’ growth stages and back calculate their life histories to determine the time of death of an infested corpse. I could handle the lab work, I think, but the field work is just too gooey and revolting.