What is that little mud spot growing on the wall outside? If you're
asking that question, you might have a Potter Wasp. They build a little
mud pot like this one to protect their offspring.
My Potter Wasp made this pot and laid one long oval shaped yellow egg
inside of it.
The egg was attached to the side of the mud pot by a single silk strand.
Before she sealed the mud pot up, the Potter Wasp caught four green
, disabled them,
and left them in the pot to feed the wasp larva
when it hatched. They
could wiggle and twitch, but not crawl. It was a bit like something out
of a horror story.
After she laid her egg and stuffed the pot full of food for her young,
the potter wasp used the flared edge around the pot opening to seal up
the hole leaving her caterpillar prey entombed alive, unable to even
attempt escape. I guess that keeps them fresh until the egg hatches and
the wasp larva eats them.
This last wasp is perched on Australian Pine tree needles. I can't say
for sure, but to me it looks like a Potter Wasp.
Since I have
butterfly plants in my yard, and
caterpillars, I get a lot of wasps.