In between 10 and 11 cm
in captivity continuously, with several flights/year when kept warm
Quercus, especially out the white oaks and cerris groups (robur, petraea, ilex, ...)
Some experience is required. Keep warm (minimum room temperature or warmer), dry and clean. Rear in spacious, well ventilated plastic containers when young and move to a netted cage when they've reached the fourth instar. Avoid condensation. Fast growing. Ready to pupate within 5 to 6 weeks (depending on temperature and quality of the food). Pupal stage is short (approximately 3 to 4 weeks).
needs warm and dry conditions