Ellie’s moth tattoo first appears after a five-year time jump, covering the self-inflicted burns on her arm. Since it was a grim reminder of the bite mark that should have turned her into an infected.
Have you noticed the army of furry, brown and orange moths that have arrived in New Orleans this month? They're called buck moths and they're the result of the stinging caterpillars that Louisiana ...
But woven throughout the flashbacks that span the five years between Season 1 and Season 2 is some subtle symbolism, which may have bigger implications for the characters and the story going forward.