North America - Arizona
June - September
Very short, in the morning
Ceanothus, Prunus serotina, Ribes, Rosa, Salix
The ova should be kept in the refrigerator, otherwise they
will emerge to soon in Spring, when there is no foliage.
After kept warm, they emerge around 2 days! Best feeding
plant should be rosa and spiraea douglasii, some types of
Prunus will work as well as snowberry (symphoricarpos) and
other types of spiraea. Keep no more than 20 together in
yogurt containers with a mesh lid on for good air circulation.
Avoid humidity. It will kill them. Put hostplant cuttings in
waterpicks to keep it fresh as possible. Just as important is
to provide a source for warmth and light to simulate
sunlight. They really need this as hemileuca tend to be sun
baskers. You can use a reading lamp and put several
containers underneath. Put the light on a timer for 15
hours a day.
Once in L4, keep about 15 larvae in a medium rearing cage
with a 60w light bulb above for light and warmth. Change
food every 2 days, even if it looks like it is still good. The
larvae seem to grow bigger with more frequent food
changes. After L4 , larvae like to wander in the mornings.
This is normal. After a few hours of wandering they return
to the host and feed. Larvae sting! not as bad as
Automeris, but you sure feel it if you get one on the back
of your hand!
When larva are finished eating, they will empty their gut
and wander for several days to a week. Once they wander
remove them from the rearing cage and just put one larvae
in its own yogurt container with some tissue paper and a
little clean moss. Also add a few drops of water but this
may not be necessary. Seal the lid and poke in a few air
holes and place the containers somewhere completely dark,
like a closet and leave them for 2 weeks. This ensures you
get clean healthy pupae with no deformities. This
techinique also has worked well for other species, Dirphia
and Citheronia, without having to use any soil. Now fill a
large cardboard box with holes punched in the sides with
clean moss, about 8 inches thick and cover the pupae with
about 3 inches of moss. Keep them outside in a sheltered
spot and water the moss every month, just so it doesn't
get too dry, but not too wet either. Pupae will hatch in
July. Sometimes you will get several pupae that overwinter
a second year.