Arctic Blue 
 Plebejus glandon rustica


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Female #2  eclosed 16 September 2009

Male eclosed 17 September 2009

Female on honey water nectar
She was collected on Murdock Mountain 1 August 2009 and laid several eggs
honey water

Butterfly from Ephraim Canyon on July 21, 2006

Butterfly from Ephraim Canyon 2006
dorsal view

On 3 August 2008 a female was located on Murdock Mountain, Summit Mountains,  Duchesne County, Utah. GPS North, West West
Elevation 10, 298 feet.

Jack Harry, Les Davis and I  followed the rustica around the mountain to determine the plant she was using to lay her eggs. We finally watched her oviposit on a tiny primrose, Androsace septentrionalis.

On 9 August 2008, this one egg hatched and was set on  a leaf of Shooting Star Dodecatheon alpinum.  During the night this larva went to the base of the plant and due to the curve of the stem, was able to get into water and died.

On 1 August 2009 two females were collected  by Jack Harry and Les and Nicky Davis at Murdock Mountain, Uinta Mountains, Summit County, Utah.

Females  laid eggs 2nd-5th of August on the chiffon material placed under the  top of a screened cage.  The cage used held a potted Shooting Star, Dodecatheon alpinum plant and a container with a cotton ball soaked in honey water made with a ratio of 1 part honey to 10 parts water as a nectar source for the butterflies.  The screen cage was placed outside in the sun for periods of 30 to 45 minutes then brought into the house.  Each time they were brought inside they began spinning in circles, then laid eggs on the chiffon cover.   The eggs hatched on the 9th and 10th of August.   They were kept in light 24x7 on cuttings of Dodecatheon alpinum, sometimes in a bouquets and sometimes in a 1 1/2 ounce plastic solo cup with lid on and a damp piece of brown paper toweling on the floor of the cup.   After feeding for 31 days, the first larva walked off the plant and refused to eat as it was ready to pupate.  They preferred pupating between two layers of brown recycled paper toweling that was in the bottom of their container.

Some eggs were sent to  John Emmel who reared them using Androsace sempervivoides.  All those larvae hibernated as second instars.

Female #2 that emerged from pupa on 16 September 2009
Female that was found on Murdock Mountain on 1 August 2009 and subsequently laid eggs
Ventral view of butterfly found July 21, 2006, Ephraim Canyon, Utah
Dorsal view of butterfly found July 21, 2006, Ephraim Canyon, Utah

Androsace sempervivoides, Pygmyflower Rock Jasmine-Androsace septentrionalis, Shooting Star- Dodecatheon alpinum
For available photos of host plants , click on
Androsace sempervivoides    
Androsace septentrionalis     
Dodecatheon alpinum

For photos of the habitat,  click on
Murdock Mountain

Ova:  5 to 7 days
Larvae:  extremely variable -the first one fed for 27 days and the last one fed 51 days.  John Emmel brood hibernated as 2nd instar.
Pupae: 9 to 10 days
Adults:  unknown

One flight each year 
per  James A. Scott "The Butterflies of North America".  These females were found on the wing the first of August in 2008 and 2009.

Overwinter as half grown larva or pupa per  James A. Scott "The Butterflies of North America"

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