Labrador Sulphur 
== Arctic Green Sulphur
 Colias nastes nastes
Immatures

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  Female    Female Eclosure    Specimen

Second Instar August 5, 2009
2nd Instar


Third Instar -  Photo on 16 August 2009
3rd


Third Instar -  Photo on 16 August 2009
3rd


Fourth Instar - Photo on 21 August 2009
4th


Fourth Instar - Photo on 21 August 2009
4th


Fifth Instar -  25 August 2009
5th

Fifth Instar - 31 August 2009
5th


Fifth Instar - 31 August 2009
5th


Pre-Pupa #4
September 1, 2009
prepupa


PUPAE
#1 Pupa formed 26 August photo 27 August 2009
pupa
pupa


#2 Pupa  on 1 September 2009
pupa
pupa


#2 Pupa on 2 September 2009
Twenty-three minutes before female emerged
pupa
pupa




Photo Details - ©Nicky Davis
LOCATION:  located by Jack Harry at Iqaluit, Nunavut Territory, Canada, July 2009
lat 63.76, lon -68.52
ELEVATION: 278 feet

PHOTOS:
Photos of Second instar through pupa

LIFE HISTORY:
The female oviposited out 100 eggs on Alpine Astragalus.  About 60 of these hatched.  Of the 60 only 17  would feed on the Astragalus cicer that was available here in Utah.  Two of these went straight through the first year and 15 hibernated.  The ones that hibernated were still quite green when they stopped eating but three turned a yellow-green color.

Ovum:  Number of days as ova unknown since the ova were chilled to slow down development.  These hatched 27 to 29 of July 2009.
Larva:  About thirty-five days for the ones that didn't hibernate
Pupa: Seven to eight days
Adult:  Unknown
Broods: One
Hibernation:  Overwinters as  third instar


Host Plant
Oviposited on Alpine Astragalus, Astragalus arcticus
Some were reared on Chickpea Milkvetch, Astragalus cicer

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