chrysalis or cocoon
Location: Mountains of North Carolina
December 2, 2011 9:51 am
Found on Physocarpus , a North American native shrub.
What is inside it?
Thank you for your help.
Signature: Carol

Cocoon of a Giant Silkmoth
Dear Carol,
This is the cocoon of a Giant Silkmoth in the family Saturniidae. A Cocoon is generally a silken structure that is spun, possibly incorporating leaves, branches or the hairs from the caterpillar in its construction. The cocoon helps to protect the naked pupa inside. The pupa of a butterfly is often called a chrysalis. We hope that helps some with the proper terminology. We believe this may be a Polyphemus Moth Cocoon (see BugGuide) or possibly a Luna Moth Cocoon (see bugguide), though the cocoons of the Luna Moth generally fall to the ground among leaf litter where a blanket of snow helps to insulate them from the cold.

Cocoon of a Giant Silkmoth
Sphinx Moth Caterpillar
Location: Fort Lauderdale, FL
December 21, 2011 12:26 pm
I believe this is a Sphinx Moth. It is feeding on Crown of Thorns. I’ve seen them over the summer before, but never in December.
PS. LOVE your site. Thank you
Signature: Anthony Argenti

Ello Sphinx Caterpillar
Dear Anthony,
Thanks for the compliment. We believe we have correctly identified your caterpillar as an Ello Sphinx, Erinnyis ello. We did the original identification based on information on the Sphingidae of the Americas website which indicates that they feed on plants in the family Euphorbiaceae which include poinsettia and crown of thorns. The caterpillar is also reported to be quite variable in coloration. BugGuidenotes: “Larval characters: (2) Horn reduced to a low point, arising from an elevated angular hump. In the last instar, the horn is reduced to a nub. Eyespot over the third thoracic segment is hidden in the resting caterpillar. Ornately banded thoracic and prolegs. Length to 7cm. Erinnyis spp. caterpillars come in a seemingly endless variety. “

Ello Sphinx Caterpillar
One of your photos shows the ornately banded thoracic legs.

Ello Sphinx Caterpillar showing banded thoracic legs
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Possibly bagworm, from Zambia
Location: Kasanka National Park, Zambia
December 11, 2011 10:52 am
Hello,
This creature was photographed in Kasanka National Park, Zambia. It was crawling on the hood of a stationary car, possibly fell down from an overhanging bush. Date: May 10, 2011.
Any idea, at least to genus? I’d be grateful. Thanks.
Signature: Monika Forner

Bagworm
Dear Monika,
That is sure one crazy looking Bagworm with its grassy bag. Bagworms generally create their bags from the foliage of the plants they feed upon. If you are able to identify the plant species it is feeding upon, it will facilitate a species identification for the Bagworm.

Bagworm
Huge Green Caterpillar
Location: Fort Myers Florida
December 6, 2011 4:14 pm
Hi, I was pruning our coco plums (Chrysobalanus icaco) today Dec six when I found this caterpillar chowing down. He is twice as long as my thumb and as wide. I live in Fort Myers FL. I searched your site to find a picture & info. about this caterpillar, but did not find any. Maybe this is a different species! Thanks in advance for your help!
Signature: Carol Schumann

Imperial Moth Caterpillar
Dear Carol,
These are positively gorgeous photos of an Imperial Moth Caterpillar, Eacles imperialis. Thanks for also providing the name of the food plant, the coco plum. A recent posting of this species from September shows a brown coloration that could be either a color variation, or more likely, the darkening of the pre-pupal caterpillar that usually leaves its food plant to find an appropriate place to dig into the soil to undergo metamorphosis.

Imperial Moth Caterpillar
This is so cool! Thank you for the ID! I had so much fun out there watching him eat and taking his picture! 
Is this a swallowtail caterpillar?
Location: Riviera Nayarit (Puerto Vallarta)
December 4, 2011 4:27 pm
Hi there, we were in the Riviera Nayarit (Puerto Vallarta area)late November and one evening as we left the resort bar we came across this bug. I’ve been looking around and I think it’s a swallowtail, but it’s also more gross than any of the swallowtails I’ve seen in pictures so far. Could it be that the caterpillar is in late pupa stages? Is it even a swallowtail? Any help you can give would be appreciated.
Signature: Michelle Gessner

Sphinx Moth Caterpillar
Hi Michelle,
This might be a Swallowtail Caterpillar, but some Sphinx Moth Caterpillars also have eyespots. Sadly, your photo does not show the anterior end where a caudal horn is found on most Sphinx Caterpillars. Hopefully we will have time in the future to allot to trying to determine a species identity.
Update courtesy of Karl
Hi Daniel and Michelle:
I think your second hunch is probably correct. It looks like a Sphinx caterpillar in the genus Madoryx (Sphingidae: Macroglossinae). It looks very similar to the pre-pupal M. plutonius specimens on the Area de Conservación Guanacaste (ACG) site. This species apparently doesn’t occur as far north as Mexico but a subspecies, M. plutonius dentatus, lives in Mexico and Belize. And yes, this appears to be one of those hornless varieties of Sphinx caterpillars. Regards. Karl
Hi Karl,
Thanks for taking the time to do this bit of sleuthing.
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