In honor of my cocooned Luna moths, and in memory of the three caterpillars that didn't make it, here are some gorgeous artistic renderings of this beautiful creature!
Thursday, October 28, 2010
Tuesday, October 26, 2010
The Luna Moth Chronicles: Day 27
It is with great sadness I report that our last caterpillar, Nenington has died.
As you can see from the photo he has taken on a yellowish pallor and there is a brownish color creeping toward his head from the back end. He is dehydrated from not eating and has shrunk in size. I misted him throughout the day hoping that would help but it was too late for him. :(I have no idea what may have caused his demise. Any experts out there have an opinion? Aside from the tiny granules of excrement on Day 23, he had no other symptoms. He was thriving and we expected him to cocoon any day. Then suddenly he became lethargic and stopped eating. He was given the same food as the other caterpillars, and after losing caterpillar #4, I was sure to wash all the leaves and branches under running water.
He may have continued to decline and suffer past today, Day 27, but with great trepidation I decided to euthanize him.
I read of a couple different methods, 1) freezing him in a plastic baggie, and 2) gassing him with acetone (nail polish remover soaked on a cotton ball and placed in a sealed container with the caterpillar).
I didn't feel confident that freezing him would completely do him in, and besides, I despise the cold! I just couldn't do that to him. I would have gassed him, but didn't have any acetone. As luck would have it, my nail polish remover is NON acetone! I'm sure my husband had something in the garage, but it looks like a tornado went through there and he can't find anything out there, so scratch that idea.
I certainly couldn't bring myself to step on him! Besides, I had to have an intact body to present to my 5 year old for burial proceedings. (Plus, you're not supposed to do that if they're diseased because you could spread it too easily.)
So...the only other thing I could think of was drowning him. He seemed so weak I thought it would be a quick ordeal. Not so. I do not recommend this method, especially for a caterpillar with a bit more life left in him than Nenington. There was a small struggle which nearly broke my heart! I bawled my head off, which I know is stupid--I mean, how many bugs have I heartlessly and without remorse stepped on and swatted in my lifetime?!
He went limp and sunk after the brief struggle. After 10 minutes of being submerged I could still detect a heartbeat, so I submerged him again. You can actually see their heartbeat through their backs. See this quick little :28 second video of a caterpillar pupating on youtube to see firsthand.
I was terrified my 5 year old would catch me drowning the caterpillar, so I hid him under a floating soapdish, which also helped me distance myself from the situation so I wouldn't have to stand there and agonize over being a caterpillar murderer.
45 minutes later he STILL had a weak heartbeat...ARRGH!!!...the agony!
I came back after 1 1/2 hours and finally, there was no detectable heartbeat. I patted him dry and laid him back in his container and my little boy was none the wiser that his mother was capable of this dastardly deed!
Saturday, October 23, 2010
The Luna Moth Chronicles: Day 24
The next to cocoon is...
I'm worried about Nenington, caterpillar #3. He stopped eating today and is just sitting on a stick. I am hopeful that he is planning to cocoon shortly, but something doesn't seem right. His excrement from last night looked really dry and grainy, instead of the usual spherical moist balls you've seen in the photos from previous updates.
Corvella and Clover will spend the night in a container with the lid slightly cracked, sitting in the open windowsill so they can begin acclimating to the cooler temperatures.
Friday, October 22, 2010
The Luna Moth Chronicles: Day 23
We have a COCOON!
Now what the heck am I supposed to do with it??? :P
Sorry, this is a bit gross! The caterpillars clear their guts right before cocooning. If you see this, and your caterpillars are in their last instar, you'll know a cocoon is in their near future! Corvella is cocooned under a leaf on the far left side of the container.
When you disturb the caterpillars, they tuck their heads under. His full length is much more impressive when he's stretched out comfortably.
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| Corvella is the first to cocoon |
This calls for some fresh research. I found this site which is quite comprehensive regarding the care of not only the cocoons, but the development of these caterpillars.
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| What to expect... |
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Nenington, scrunched up, probably in fear of the five giant "caterpillars" staring him down! |
Stay tuned to find out which of the two remaining 'pillars cocoons next!
Tuesday, October 19, 2010
The Luna Moth Chronicles: Day 20
Wow, it's been 20 days and I've managed to keep these caterpillars alive!
Kudos to me, heh heh!
Nothing much to report. They are eating up a storm, especially at night. A word to the wise...once they start getting large like this be sure to stock them with enough leaves to last through the night, unless you plan to get up periodically and check on them! Four large leaves seem to be about the right amount for mine, and they also like climbing so be sure to include the branch too.
Kudos to me, heh heh!
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| "Clover" |
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| "Corvella" |
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| "Nenington" |
Monday, October 18, 2010
Saturday, October 16, 2010
The Luna Moth Chronicles: Day 17
Day 17: Growing! They are closing in on 2". In fact, they may well be 2" long but they rarely stretch out their full length. When disturbed they tuck their heads under and scrunch up so it's hard to get an accurate measurement.
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| "Corvella" |
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| "Clover" |
You can see how his skin looks stretched tight, especially near the back end, like he's about to burst at the seams! Surely he's going to molt soon.
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| "Nenington" |
Now is a crucial period for the larvae regarding lighting. They are light sensitive and take their cues from the length of daylight hours. I need these guys to produce the hormone that makes them overwinter in their cocoons, otherwise I'll have Luna Moths flying around the house! And if they mate and lay eggs I will have no food for the hatchlings since it will be late autumn. So I'm being careful to cover their containers with a towel to be sure they get no more than 14 hours of light each day.
Listen to me, ha ha! I sound like I know what I'm talking about! (I knew nothing about this a month ago!)
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