larvae turning black?

[Martin Hoehne]

Hello everybody,

did anyone ever observe larvae that turned black? They are obviously
dead and the blackening starts at the anterior end and progresses to the
posterior end. One of the first things turning black seem to be the
salivary glands. 
Is this due to contamination with a fungus? Bacteria? Or a strange
mutation?

Any help would be appreciated,

Martin


Fischbach Lab
Freiburg University, Germany

marthoe at biologie.uni-freiburg.de