"This is the most complicated potion I've ever seen. Lacewing flies, leeches, fluxweed, and knotgrass. Well, they're easy enough."
Hermione Granger on the ingredients of the Polyjuice Potion[src]

A bottle of lacewing flies

Lacewing flies, or just lacewings, are small green insects named for their large, transparent, laced wings. Lacewing flies are sold at the Magical Menagerie.[1] Lacewing flies are an ingredient used in the Polyjuice Potion,[2] where they must be stewed for twenty-one days. Lacewing flies are not on the Restricted Register.


In 2020, some Lacewing flies appeared to be missing from the Hogwarts Potions stores.[3]

Behind the scenes

  • The use of lacewing flies in the Polyjuice Potion was chosen by J. K. Rowling to represent "an intertwining or binding together of two identities", as suggested by the word "lace" in the name.[4]


The Harry Potter Wiki has 6 images related to Lacewing fly.

Notes and references

Community content is available under CC-BY-SA unless otherwise noted.