Puppenruhe bei Eupacardia caletta

Normalerweise schlüpfen die Falter im Herbst (September/Oktober). Soweit mir bekannt gibt es nur eine Generation im Jahr.

Eupackardia calleta pupae can easily remain in diapause for two and even three years. So don't be surprised if the emergence of your calleta moths is prolonged.

Your question depends entirely on where your livestock is from. Some material, like livestock from Texas and eastern Mexico consistently has two broods per year-- adults fly in spring and the second generation flies during the autumn. Arizona and western Mexico populations have one brood per year. However, western Arizona populations produce adults in autumn / winter. Adults of eastern Arizona populations fly during the summer time. (And in populations from the Baja California peninsula both sexes fly at night, whereas males from all USA populations are diurnal!)

It is true that Eupackardia calleta cocoons under captive conditions can take 2, 3 ... even sometimes longer to emerge as adults. Generally, this does not happen in habitat. This is because cocoons in captive culture do not experience the very high temperatures and dryness that is normal in nature. Then after several weeks or months of dry and often intense heat, temperatures actually decrease and humidity increases with the rainy season. This is probably what is necessary to stimulate a normal annual emergence.

Regards,

M