Northern Cloudywing, Ova, Larvae -  Hesperidae Pyrginae Thorybes pylades

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Female oviposited on 23 July 2009

24 July 2009

24 July 2009

First Instar - Emerged 28 July 2009

Second Instar - Molted 3 August 2009 - Photo 4 August 2009

Third Instar - Molted 9 August 2009

Fourth Instar - Molted 15 August 2009

Molting to Fifth Instar inside nest - 22 August 2009

Fifth Instar - Molted on 22 August 2009

Fifth Instar - Molted on 22 August 2009

Fifth Instar - Molted on 22 August 2009

Fifth Instar - Seemed to be hibernating 5 September 2009 - 1 1/16 inches long

Fifth Instar preferred resting inside a paper tube which it silked together

Tubes made of recycled paper towel were placed at the plant base and were spritzed daily to prevent dehydration.
The larva used both tubes to rest never frassing inside either tube.
Since the larva's feeding had slowed and then stopped, I thought it had hibernated.

The larva became active again on 6 September 2009 and fed until 14 September 2009.
Then it began running around the plant then into the tubes and out again.
 It finally settled back into a tube, silked it together and stayed there until it pupated
on 28 September 2009.

Having this bottomless soda bottle rest inside of the plastic tub and over the bouquet of host plants
helped keep the environment hydrated and kept the caterpillar inside

Photo and Other Details - ©Nicky Davis
Female located by Todd Stout 20 July 2009 - Neff Canyon, Salt Lake County, Utah
Photos are of different stages of development of the ovum and larva.

Ovum: 5 days
Larva: 50 days
Pupa:  15 days
Adult:  unknown
Broods: One
Hibernation:  Usually hibernates as last instar, but this one went straight through using a lot of coaxing with light 24x7, temperatures close to 75 degrees,  spritzing and always fresh host plants.
Larval Host  Plant:  Yellow Sweet Clover until no more fresh could be found.  The larva was then fed on Alfalfa leaves.

Habitat: Woodland

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