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Oregon State University
Insect ID Clinic


Honey Bee Diagnostic Services

Lesser Wax Moth

Causative Agent: Achroia grisella (Lepidoptera, Pyralidae)

Range: Worldwide

Life cycle:

  • Similar to the greater wax moth
  • Persistence in the hive results in the disorder known as Bald brood (brood cells are uncapped and the head can be seen in later stages of development).


  • Less of a problem then the greater wax moth
  • Healthy colonies are able to fend of this pest  


Other Useful Sites:

References used:

Root, A. I. (1990) The ABC & XYZ of bee culture 40 th ed. A.I Root Co. Medina, OH.

Printable pdf version



April 3, 2008