The label on a jar of Blatta Pulvereus

Blatta Pulvereus is, likely, an ingredient used in Potion-making.[1] Based on its etymology, it might be, or contain, pulverised cockroaches or other insects.


  • "Blatta" is the Latin term to refer to lucifuge insects: any insect that shuns the light, such as cockroaches, moths, or bookworms, although it specifically refers to cockroaches in the Italian language.
  • "Pulvereus" is the Latin root of the modern English word "pulverised".


Notes and references

  1. Label Collection book in the Harry Potter Wizard's Collection box set.