Dennis is looking at a soil fungus -- and I might buy that if this collapse
was in a specific climatic zone, time of year. The grasshoppers I worked
with years ago had a high attrition rate of nymphs when molting occurred in wet
weather. But again, we've got all regions, all times of year, different
soil types, etc.
And, as you say, frames tend to get covered with fungus/mold in spring. So
fungi in gut may/may not mean anything.
Jerry
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