L.S.,
 
I sample groups of larvae 200 hours postcapping. To find them I open a number of cells and look for larve with age characteristics I want (body colour, eye colour). 
It would be easier/work saving if I could deduce the age of the larvae from some morphological feature of the capping itself. 
 
For my eyes there does not seem to be a difference between say 10 hours old capping and 250 hours old capping. Maybe old capping tends to look more "sunken". 
 
I have been searching in the literature but with no success.
 
Can someone point me to a publication on this matter? Or share their findings? 
 
all the best,
Lennard  		 	   		  
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