Age of brood . Usually older sealed larvae or young pupae. Usually unsealed larvae 3 to 5 days of age, in 'C' shape. Usually older, sealed larvae Sealed or unsealed larvae. Colour of brood Larvae pearly white, glistening.
Brood has cappings raised, dry, no punctures.
Dull white, becoming light brown, coffee brown, dark brown or black Dull white, becoming yellow, brown, almost black. Greyish, becoming brown, black. Head end darker. White with a tip changing to grey-black. Consistency of dead brood .