variants: or milky spore disease
Definition of milky disease
: a destructive disease of scarab beetle grubs and especially Japanese beetle larvae that is caused by spore-producing bacteria (Paenibacillus popilliae synonym Bacillus popilliae or Paenibacillus lentimorbus synonym Bacillus lentimorbus) and is marked by an the opaque, milky appearance of the infected larvae
Note: Commercial preparations containing spores of the causative bacteria are used to cause milky disease in the biological control of Japanese beetle infestations.
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