MORE CATERPILLARS
AND INSECTIVOROUS CURIOSITIES!
This week, I found another old friend, the caterpillar of a Painted
Lady Butterfly! These are really beautiful and quite easy to find
if you look on plants such as Pearly Everlasting that have gray-green
fuzzy leaves and stems. I have a weed that grows in among my vegetables
that often is host for these caterpillars that make little whitish
web like nests. In addition to stripes and spots, it has branched
spines to make it a beautiful find. Needless to say when I find
its host plants growing in my garden uninvited, I welcome them
and give them space! The vegetable garden is suffering from lack
of rain, but I am harvesting lots of Sugar Snap Peas these days
and ate my first small tomato off the vine. Broccoli also is producing
dinner material these days.
One of the highlights of
the week came when I found a patch of the insectivorous plant,
Sundew in bloom. Not only that, but I noticed a blue Damselfly
was stuck on one of the sticky leaves! I picked the insect off,
and set it flying. It had not yet been digested. But how does
a plant digest an insect? I referred to a handy book on Swamp
and Bog plants by John Eastman to get that answer. Those leaves
you see on the right have sticky glands that insects get caught
by. The glands secrete a anesthetic substance along with digestive
enzymes that enable the soft parts of an insect's body to be absorbed.
This insect trapping gives these plants a source of nitrogen.
I looked to see if any insects had been caught by this plant and
found a beautiful blue Damselfly stuck to those leaves. I carefully
picked the leaves and insect to see if the animal had been digested.....no
it was still alive and I freed it!
Below
you see the insect and a closeup of a couple of leaves to which
it was stuck. Look at those big blue eyes! The bent wing was able
to function once free of the sticky leaf.
The caterpillar you see above
is now in a chrysalis state, as is the Monarch from last week.
Now, there is more chemistry going on to create butterflies fr
om a gooey mess! The Painted Lady
chrysalis is hanging from the plant, as a caterpillar, it was
feeding from. The plant is Pearly Everlasting. If you look closely,
you can see that the leaves have a white fuzziness to them. Perhaps
next week, I can show you what emerges!
We continue to have hot and dry
weather up here. Campers aren't complaining, but my garden is
wilting. The beetles are decimating the potato plants, but we
continue to enjoy the Sugar Snap Peas. I've even picked a few
small Cherry Tomatoes! We finally got out on the water yesterday
with a great cruise to the outer islands. The Great Blue Heron
can still be seen high in trees as they tend to their young, and
the seals were basking in the sun on East Brown Cow Island. The
beat goes on.......
7/18/08 Ronnie into insects.