Imperial Moth
Eacles imperialis

Family: Saturniidae 
subfamily:  Ceratocampinae-Hodges # 7704

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Larvae began to rock back and forth
6:53:07 P.M. 21 August 2012
rocking back and forth

Larvae rocking back and forth and straining
Head case looks like it is about to come off
 6:54:58 P.M.  21 August 2012
rocking back and forth

Straining to break free of old skin that is now too tight
 ready to molt or eclose at 7:58:04 P.M. 21 August 2012

ready to molt

Beginning to Molt or Eclose
Old skin has broken open - 8:00:57 P.M. 21 August 2012


Straining to break the connections between
old and new skin -  8:01:34 P.M. 21 August 2012


8:01:51 P.M. 21 August 2012

8:02:43 P.M. 21 August 2012

8:03:46 P.M. 21 August 2012

Old head case breaking away - 8:04:00 P.M. 21 August 2012
old head case falling off

8:06:17 P.M. 21 August 2012

8:09:41 P.M. 21 August 2012

Finally breaking out of old skin entirely - 8:10:58 P.M. 21 August 2012
finally breaking out

All connections broken - 8:11:29 P.M.  21 August 2012
connections broken

Maybe clapping hands? -  8:16:07P.M.  21 August 2012
clapping hands?

Discarded skin (exuvia) was later consumed by the larva
 Total time was 1 hour 23 minutes  - 08:16:30 P.M. 21 August 2012
discarded skin or exuvia

PHOTO DETAILS - ©Nicky Davis
LOCATION:  Unknown

Ovum: I received 5 eggs but with no information on the day they were laid or the location.

When three  hatched 28 July 2012 they were placed on Ponderosa Pine, then a fir, then a maple, and a Scrub Oak.  After not seeing them feed on any of the plants, I put them each on a Scrub Oak leaf with nothing else to eat for the night.  In the morning they had fed on the oak. The other three  hatchlings were also placed on oak  and  they also  fed on it. They were first instars for five days or until  2 August 2012.

 They molted to third instar on 6 August 2012 or four days. 

Three larvae were given back to John Richards to rear since his hatchlings had refused to eat.  The remaining two molted to fourth instar on 11 August 2012 which was five days  as third instars.  Note that this larva has red spikes on its head and tail but no black tips on the red spikes as it had as  third instar. Also #2 fourth instar also has just red spikes.

#1 molted to fifth instar at 8 P.M. 21 August which was 11 days spent as fourth instar.  On August 25 it was 60 mm long.

Adult:  unknown
Broods: one
Larvae: 50 days as larvae
Hibernation: Pupae hibernate
- They took 40- 41 days to emerge from the date they were taken out of hibernation.

Host Plants :  They used  Quercus gambelii - Common names used are Gambel oak, scrub oak,  Rocky Mountain
white oak and Utah white oak

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