Sin, death, or merely a trick of the eye: what is the art-historical symbolism of the fly?

After the pesky insect made an unexpected cameo in last night’s US Vice Presidential debate, alighting on the head of Vice President Mike Pence (and settling in for a full two minutes), social media has been abuzz with interpretations.  

Flies have a long history in Western art. Dating back to Medieval times, the bug’s appearance in an artwork was used to symbolize death or rot of the flesh and soul.

At the time, flies were believed to generate spontaneously out of mud, and had a strong affiliation with the Devil, or Beelzebub, who is described in the New Testament as the “lord of the flies.” In vanitas paintings, flies often appear alongside a skull, a reminder of the impermanence of the physical body and the inevitability of death. Pictured buzzing about a woman, flies indicate lustful wantonness and impropriety. And near a nobleman or clergy, the bug is thought to have implied corruption and deceitfulness.

Some art historians have argued that artists included flies less for their symbolic meaning than as a signifier of the artists’ own talents—and with good reason. Flies often appear as a playful trompe l’oeil feature in the margins of medieval manuscripts and on painting frames.

For instance, the Renaissance art historian and artist Giorgio Vasari recounted a popular story (which was likely merely legend) in which Giotto, while an apprentice of Cimabue, painted a fly on a portrait by his master, momentarily fooling Cimabue, who attempted to swat the fly away before recognizing the prank. 

The significance of the fly inevitably varied from painting to painting. Below you can decide which interpretations you think fit these fly-featuring paintings from art history.