Polyphemus Moth
Antheraea polyphemus
Female 

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female dorsal


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Photos ©Nicky Davis

Kevin Collison from Osceola, Polk County, Wisconsin (elevation 825 feet) had a female polyphemus mate May 31, 2015 and she oviposited on June 1,  2015I received ova on June 6, 2015.

Kevin advised that the caterpillars hatch in about 6 days with temperatures in low 90s, 24 days with temperatures in the mid 60s and about 10 days in the low 70s.

Ova - 10 days as ova
at 75 ° F

First Instar - Hatched 11 June 2015 - Three days as first instar (75°-78°) - 3 mm long
Second Instar - #3 Molted to 2nd instar 14 June 2014 - Four days as second instar - 6 mm long
Third Instar - #3 molted to 3rd instar 18 June 2015 -  Five days as third instar - 12 mm long
Fourth Instar - #3 Molted to 4th Instar 23 June 2015 - Seven days as fourth Instar, 19 mm long
26 June 2015 40 mm long
Fifth Instar - #3 Molted to 5th instar on 30 June 2015- 60 mm long at rest - 9-11 days as fifth instar


Gambel Oak - Quercus gambelii  was used as the host plant

Host
Oak (Quercus), Birch (Betula), Willow (Salix)
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