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When probed with a toothpick, dead larvae are watery and granular, not “ropey” or mucous-like. If dead larvae have dried down to a scale, the scale doesn’t adhere to comb cell wall. Scales often rubbery and black. look up European Foul Brood.

When probed, dead larvae are watery, white and paste-like. If dead larvae have dried down to a scale they are chalky pellets, often on bottom board or discarded in front of the hive. Look up Chalkbrood.