A PHOTOGRAPHIC MOTH-HUNTING JOURNAL

Tuesday, July 21, 2009

Giant Leopard Moth - caterpillar to pupa to adult

[this spans a month's time, from 21 April 2009 to 21 May 2009; i have, of course, raised several caterpillars since, even from eggs, but this was my first ever caterpillar-to-moth/butterfly (moth, in this case) experience.]

an enormous black, spiny caterpillar was found during an evening walk, and taken home by me at the urging of my best friend, tim, since i have been very interested in observing the whole metamorphosis process of caterpillar to butterfly/moth, but had not yet come across a caterpillar this year 'til now.

he was brought home in a jar, and then placed inside a 10 gallon fish tank, along with some leaves of dandelions, honeysuckle and violets. i had identified him previously because of his distinctive orange bands which became visible when he curled up in defense mode. so, having identified the caterpillar as that of a Giant Leopard Moth, i found which kinds of food were most popular with that caterpillar and tried them all. the violet leaves seem to have been his preferred choice. i refreshed the supply of these multiple times a day.

Photobucket

after observing the caterpillar over a few days, i noticed that he was nocturnal, and would remain nearly motionless during daylight hours. eventually, however, he began to run around and around the tank day and night; this was unusual, and i thought that perhaps he was looking for a place to settle in for his transformation, but couldn't find a happy spot. he tried spinning silk in two different corners of the tank, but gave up eventually on each spot. i decided that there was something he needed that wasn't in the tank, that perhaps the glass was too slick for him and the silk to cling to easily. so i introduced a small cardboard box with a twig in it, the bottom of the box placed against the back of the tank so i could still observe the caterpillar. within one minute of me putting the box in the tank, the caterpillar was in it and only left once to come right back. he stayed in it, checking it out for about a day, then began weaving silk in the upper right corner of the box.

Photobucket

the next day, he had surrounded himself in that corner with a fine netting of silk, and remained motionless there now both during day and night.

Photobucket

another couple of days later, and it appears that the cardboard box was just what he needed. he's now shedding his skin as he begins to pupate. unlike many moths, the Giant Leopard Moth caterpillar does not make a solid cocoon, but rather pupates directly within the fine netting he's woven.

Photobucket



i started putting the box next to my pillow, so i would hear if it started to hatch while i was asleep.





this is the pupa removed from the silk netting; this doesn't harm it at all, so long as the pupa is handled carefully. this was done so that i could study the pupa form. the wing cases and body segments are well-outlined by the pupa casing and easily identified.



a Giant Leopard Moth is born, and it's a girl! (caterpillar found 4-21-09, pupa hatched 5-21-09; spent about 3 weeks as pupa)





a Giant Leopard Moth in action (this is a photo of one found in the wild, not the one i hatched)

7 comments:

  1. Im so glad I found your blog. I have a few caterpillars right now and one of them is a Giant leopard moth. I raised a few monarchs and swallowtails but never a moth so ive been hunting for info. Its been hard to find anything on the net but your blog has been very informative. So just wanted to say thanks for the pics and the info!

    ReplyDelete
    Replies
    1. you're welcome!! and thank you for your comment, it's always great to know that my blog has been helpful to a fellow butterfly/moth lover!

      Delete
  2. Thanks for all the info on the giant leopard moth. I recently found a caterpillar also and have been hunting for info on the net but have been coming up shorthanded. Your blog has been very informative! Thank you

    ReplyDelete
  3. A small girl of our acquaintance brought a caterpillar from Oklahoma to Iowa and back on a family trip. It ate voraciously and once back in Oklahoma, pupated and hatched.

    ReplyDelete
  4. Thanks so much for your informative blog! My glm caterpillar came in on sheets I'd dried in the garden -thank goodness it fell onto the floor before I got into bed! I put it into a plastic blueberry carton, identified it online, and gave it violet leaves to eat. It started hiding and being very unresponsive a few days ago then shed its skin last night, and is now a (little) friskier, though the red stripes are v hard to see when it curls. I hope it pupates this year (I live in Michigan).
    Now I'vefound your article I have given it a bit of cardboard box too. I raised a black swallowtail on a parsley plant in LA, it attached itself to the firm stem of the lavendar flower also in its container only by chance as it was the food for another, totally different, caterpillar I was also raising. I thought at first it wanted a change of diet!
    I'm a professional scientist and although I know a lot of details about how these creatures develop and so on, it still also feels so wonderfully mysterious and miraculous. :)

    ReplyDelete
  5. I hope you will get this even though it's almost a year later. I have 12 glm caterpillars I have had since eggs. Some of them are almost an inch and a half long now, and about three weeks old. How large was the caterpillar when it pupated? Thanks!

    ReplyDelete
  6. Thank you I have a GLM that has been in cocoon form for 22 days now. I think it will be hatching soon. It has been hard to find any good info on it, your info has been the best of all. Thanks Karen

    ReplyDelete

ALL PHOTOGRAPHS © D. SUTTON / T. SEARFOSS