Western Pygmy-Blue
Brephidium exilis
 
Immatures

Home  -  Butterflies  -  Details

Eclosure      Adults     Specimen

Oviposited August 29, 2006
ovum


Oviposited August 29, 2006
ovum


Young Larva, September 11, 2006
young instar


larva just after molting on September 12, 2006
It's almost 1/8 of an inch long
larva


Head is hidden in atriplex buds
Fourth Instar
September 16, 2006
larva


Close-up shows tiny dark  head
Fourth Instar
September 16, 2006
larva


Pupa

Pupa formed on September 18, 2006
pupa formed on September 18, 2006


September 24, 2006 - 8:12 P.M.
pupa at 8:12 P.M. September 24, 2006
September 24, 2006 - 8:36 P.M.
Pupa September 24, 2006 at 8:36 P.M.


September 24, 2006 - 10:56 P.M.
Pupa at 10:56 P.M.


September 24, 2006 - 10:57 P.M.
pupa at 10:57 P.M.


September 25, 2006 - 8:28 A.M.  
Adult butterfly emerged at 8:51 A.M.
Pupa 23 minutes before butterfly emergence




Photo Details - ©Nicky Davis

Female was in alfalfa field when collected by Les Davis from private property on east side of Sheep Lane in Grantsville, Tooele County, Utah, with
permission from owner
Elevation 4348 feet
North 40º 35' 37.86", West 112º 22' 12.99"

Ova
The female oviposited on Tumbleweed syn. Russian Thistle -  Salsola kali  and Silverscale  syn. Wedgescale syn. Silver Orach - Atriplex argentea
1., 2.  August 29, 2006


Larva
All larva fed on Silver Orach - Atriplex argentea
1. left, right -  Larva on September 16, 2006
2. Larva just after molting on September 12, 2006. This larva is about 1/8 inch long.

3. Young Larva on Silverscale syn. Wedgescale syn. Silver Orach - Atriplex argentea on September 11, 2006

Pupa
Pupa on September 24 and 25, 2006, showing development up to emergence of adult butterfly
1. Pupa lightened just before emergence as the butterfly separated from the casing
2. left &  right, pupa  showing how  much darker the pupa has turned
3. left &  right, pupa showing the development of the pupa since it formed on September 18, 2006

Pupa formed September 18, 2006
1.  Dorsal View


Host Plants

Silverscale, syn. Silver Orach, syn. Wedgescale - Atriplex argentea
Tumbleweed, syn. Russian Thistle - Salsola kali

  go to top