|Female Cecropia on (on
left) and Male Gloveri (on right) Silk moths
First Instar on 21 June 2014
7 mm long
22 June 2014 - 8 mm long with brighter orange at
base of spines
24 June 2014 Molted to Second Instar
This one is feeding on willow
June 27, 2014 - Second Instar on Choke Cherry
Becoming Paler, Greener Color
Third Instar on 29 June 2014
Third Instar on
29 June 2014
Larvae began molting to Fourth Instars 2 July 2014
31 mm long
Fourth Instar feeding on Chokecherry
Fifth Instar 7 July 2014
Fifth Instar 10 July 2014 - 65 mm. long
Fifth Instar - Close-up of Caterpillar's
abdominal prolegs with crochets (tiny hooks)
Photo Details - ŠNicky
photos of immatures from a Hyalophora
cecropia female (offspring of a raised
female mated with a wild male from Oseola,
Wisconsin) bred with a wild male Hyalophora
gloveri from Little Cottonwood Canyon,
Salt Lake County, Utah.
On June 1, 2014 John Richards brought his cecropia
pupae into his home from his garage.
He didn't mist them. A female
emerged and on 8 June 2014 he tethered
the female with a thread in a breeding cage
and placed her up Little Cottonwood Canyon
about a mile from the mouth, on north side
near the old granite sand plant. The
door of the cage was left open enough to
enable entry of a male gloveri
moth and they mated successfully.
18 June 2014 the ova started to hatch.
Some were placed on Sand Bar Willow and some
on Choke Cherry. Caterpillars on both
host plants began feeding right away.
24, 2014 - One on Willow and one on
Chokecherry molted to Second Instar.
The willow pupae were given to another
party to enjoy
June 29, 2014 they began molting to third
July 2, 2014 they began molting to fourth
7, 2014 they began molting to fifth
instar, 3 more molted to 5th instar on the
July 8, 2014
July 11, 2014 #1 caterpillar that molted
to fifth Instar on July 7th measured 74 mm
Caterpillars were about 90 mm long just before
they stopped feeding and expelled liquid.
They spent 7 to 9 days as 5th instar before
expelling excess liquid. They then began
spinning a cocoon which took about a day.