Chryxus Arctic
Oeneis chryxus altacordillera

Immatures

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ADULT MALE EMERGING     ADULT FEMALE EMERGING     SPECIMEN
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Photos in 2012

Ovum on 21 June 2012
ovum on 21 June 2012


Ova on 25 June 2012
ova on 25 June 2012



First Instar -  Hatched 30 June 2012 - Photo 1 July 2012
first instar - 1 July 2012


Second Instar - 6 mm - 7 July 2012
second instar


Second Instar - 6 mm - 7 July 2012 - Hatched 30 June 2012
second instar


Third Instar - 10 mm - 15 July 2012
third Instar 15 July 2012


Third Instar - 10 mm - 15 July 2012
Third Instar - 10 mm - 15 July 2012



#1 Fourth Instar  21 July 2012 - 15 mm long
4th Instar



#1 Fourth Instar  21 July 2012 - 15 mm long
4th instar



#4 Fifth Instar - Molted 30 June - Photo on 2 August 2012 - 25 mm long
5th Instar


#4 Fifth Instar - Molted 30 June - Photo on 2 August 2012 - 25 mm long
5th Instar



Pre-Pupa
pre-pupa
 

Pupa Photos

#3 Pupa formed 15 August 2012- 15 mm
pupa
#3 Pupa formed 15 August 2012 - 15 mm
pupa
#3 Pupa formed 15 August 2012 - 15 mm
pupa


#3 Pupa showing development - 24 August 2012
One day before adult emerged
developed pupa #3


#3 Pupa showing development - 24 August 2012
One day before adult emerged
developed pupa

#3 Pupa showing development - 24 August 2012
One day before adult emerged
developed pupa


PHOTO DETAILS - ©Nicky Davis
Set 1 - 2012
LOCATION:  Todd Stout located a female 15 June 2012 at Beaver Creek, North of Fairplay, Park County, Colorado
elevation 10,900 feet or 3322 meters.

Ova:  The female oviposited on the net of the container  holding a potted  sedge. 19 June to  24th June 2012 - One hatched 30 June 2012. Eight others hatched over the next few days - 11 days as ova.  Thirty-three ova were laid and only 9 hatched - 27 per cent.

Larvae:  Larvae refused  Reed Canary Grass - Phalaris arundinaceae and Blue Grass - Poa  Pratensis. Number one was kept under continuous light.  Number one  molted to second instar 7 July 2012 - 6 mm - Seven days as first instar.  Number one molted to third instar 15 July 2012 - 10 mm long - Eight days as second instar. #1 Molted to Fourth Instar 21 July 2012 - 6 days as third instar.  ( #1 fourth instar seems to have gone into hibernation as of 30 July 2012 .  No frass since then.  The larvae that didn't hibernate fed as 5th instar for about 37 days for a total  of 60-66 days as larvae.


#3 Molted to fifth instar on 30 July 2012 and attained a maximum length of 30 mm on 9 August 2012.  #3 then became shorter and wider and was 27 mm on 11 August when it stopped feeding and left the plant.  It was placed on a damp circle of paper towel in a cello cup  and pupated between 10 P.M. 14 August  and  7 A.M. 15 August.

#4 molted to fifth instar on 30 July 2012 - 25 mm long as of 2 August 2012.  #4 spent 8 days as fourth instar (22nd to 30th of July).  #4 has also been kept under lights continuously.  Total time as larva was 66 days.

#5  Hatched  2 July 2012, molted to second instar after 7 days on 9 July, molted to third instar after 7 days on  16 July, molted to fourth instar after six days on 22 July, molted to fifth instar after nine days on 31 July, attained a maximum length of 29 mm  on 16 July became shorter and shorter  then left the sedge on 22 August at 22 mm long.

Pupae: 10 days from the day the pupae form until the adults emerge
Specimen:  Pinned by Jack Harry
Adult:  Unknown 
Broods:  Biennial per "Butterflies of North America" -  James A. Scott. 1986

Hibernation:  Overwinter as  first to third instar the first year and as fourth to sixth instar the second year per "Butterflies of North America"-  James A. Scott. 1986


Host:  Reared  on  Carex microptera
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Set 2 - 2010 - Oeneis chryxus chryxus
LOCATION: On 2 July 2010  two females were  located by Todd Stout at Christmas Meadows Road; East side of Utah Highway 150, .4 miles ESE Stillwater Campground, Summit County, Utah
ELEVATION: 8600 Feet

PHOTOS: Showing where the butterflies liked to oviposit.

Two females oviposited  over several days on sedge blades, stems, and tricot.  The ova all collapsed.
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