2015 December 19, “Seasonal Synchronization of Diapause Phases in Aedes albopictus (Diptera: Culicidae)”, in PLOS ONE, DOI:10.1371/journal.pone.0145311:
Thus, it is on September 11 th, 17 days after the CPP, that 50% of the eggs are in a prediapause stage in the field.