Western Hercules beetle larvae weight

[Spyro]

Hi all,

I have 4 larvae that are getting pretty big but I have nothing to compare them to to see if they truly are big. What are the typical larval (L3) weight limits that have been seen for this species?? 
Here are mine: they each have put on about 1.5g of weight in the last month  

1.  23.73g

2. 15.81g

3. 23.36g

4. 21.72g

 

thanks!

[Goliathus]

Male D. grantii larvae can reach up to 30 grams, under ideal conditions.  D. tityus can reach this as well.