Pinheads     1/16 inch
1/8 inch     8 - 11 days
1/4 inch     12 - 16 days
1/2 inch     17 - 21 days
5/8  inch    22 - 27 days
3/4 inch     28 - 33 days
Prewing      2-3 days from being fully mature
Full grown   36-43 days