Located July 25, 2014 - Second Instar
Molted on July 30, 2014 - Third Instar
Molted on July 30,
2014 - Third Instar
Molted on August
7, 2014 - Fourth Instar
August 7, 2014 - Fourth Instar
Molted to Fifth Instar 3P.M. 19 August 2014
Molted to Fifth Instar
3P.M. 19 August 2014
Molted to Fifth Instar 3P.M. 19
August 2014 - 30 mm long
Stopped Feeding and walked off the
plant on 2 September
and on 3 September 2014 Began Spinning a Loose
Cocoon
Using Its Own Hairs and Silk To
Prepare to Pupate
Nest on 7 September 2014
Pupa - 12 September
Photos
©Nicky Davis
Ova emerged 2 September 2014 and look as if they
could be Tussock Moth larvae
___________________
Nicky Davis located larva July
25, 2014 feeding on Coyote Willow at
Butterfield Canyon, Salt Lake County, Utah
Molted to 3rd instar on July 30, 2014
Molted to 4th instar August 7, 2014
Molted to 5th instar August 19, 2014
Stopped feeding, became agitated and began
pacing around the container September 2, 2014
A place to pupate was prepared using a plastic
container with a piece of brown paper towel in
the bottom then an empty toilet paper roll cut
to fit upright in the container and another
piece of brown paper towel placed over the
toilet paper roll. The caterpillar was
placed inside the toilet paper roll and the
plastic container lid was secured to the top.
The caterpillar began spinning a loose cocoon
using its own hair and silk on September 3,
2014.
1st instar was 2 mm on 3 September 2014
4th instar was 25 mm on 11 August 2014
4th instar was 29 mm on 14 August
5th instar was 30 mm 19 August 2014
5th Instar was 36 mm 23 August 2014
Host
Salix exigua -
Coyote Willow
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