I think I saw.

[I Macaulay]

I spotted a fuzzy green ( Almost Chartreuse) abt 30MM  caterpillar as I was walking up the drive with my hands full.

I think it was an Automeris io, but have never seen one before and can no longer find the one I spotted.

Do these exist here and if so what in a cedar woods would it be hanging out on.

Ian

Senility has been a smooth transition for me.

Note New Hours

Ian Macaulay   Carp, Ontario

Open at 11:AM   Close at 5:00 PM

45.2397 N long: 76.0991 W Elv 137 M UTM
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[Bev Wigney]

Ian and all,

I've found the adult moths at Murphy's Point Provincial Park.  I just checked iNaturalist for records and the species has records for Arnprior, Braeside, Shawville, etc.. so they could be around your place.  I also took a look at the list of host plants on the Wikipedia page for Automeris io.  Most are trees, but Sweetfern is on the list and also Purple Loosestrife!  You can see photos of the caterpillars and see other info like the host plant list here on Wikipedia.
https://en.wikipedia.org/wiki/Automeris_io

bev

formerly of Osgoode 

now in Round Hill, NS

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[rmb...@istar.ca]

Thankyou, Bev for the link. I've had several adults come to the moth
lights again this year, although not as many as last year. I'm
looking forward to finding the large caterpillars, they're a pretty
thing to photograph. I can attest to their defenses and the effect it
has on skin. One year I was picking up some leaves from a drain and
pinched the wad in my fingertips when suddenly I felt a "buzz"
sensation. when I dropped the wad and knocked it apart there was an
Io caterpillar. It wasn't painful, more of an uncomfortable numbness
that lasted for almost 2 days. I have handled all kinds of
caterpillars and was always careful not to squeeze them, this was the
first time I had that happen.

Rose-Marie, north of Perth Road Village

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[I Macaulay]

Just went hunting.  I did not find any more of the critters.  A few Tussocks and some well eaten Milkweeds.

Lots of Poison ivy  but the woods are Cedar and Pine with a Carolina Poplar in the center.

The caterpillar was in the dirt pile so It had to have fallen there from a height. 

Off to do plumbing now, a different adventure  :-)

Ian

Senility has been a smooth transition for me.

Note New Hours

Ian Macaulay   Carp, Ontario

Open at 11:AM   Close at 5:00 PM

45.2397 N long: 76.0991 W Elv 137 M UTM
    Don't Forget to Save the Stamps

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[John and Donna Greenhorn]

I tried posting this to Naturelist via the google group page but have heard no comments.  Perhaps it was my use of this page, so just in case I thought I would try again by tacking it onto another caterpillar question…

 

Donna found this caterpillar crawling on a rock wall in the shade of a maple tree.  It is about 4 inches long.  Trying to identify it online has led us in circles.  Perhaps an Emperor moth but it doesn't seem to quite match?  We would appreciate any suggestions. 

Thanks, Donna and John Greenhorn

[P Auritus]

Hi,

I saw this email earlier, and I thought I had replied, however succinctly.

I thought it was a Cecropia moth (Hyalophora), but that is but a guess. I normally spend my time looking at things with backbones, so treat my suggestion with healthy skepticism. Unless my knowledge is less than I think it is, that excludes these guys! (Although once, as a TA at university in a first-year biology course, I spent a surprisingly inordinate amount of time trying to tell some first-year students that yes, snakes do indeed have bones. I think some of them still didn't believe me...)

Cheers,

Shane

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[Bev Wigney]

John, Donna and all,  
I replied to your post on August 2nd, but maybe it went into a spam box or something.  Anyhow, I just cut and pasted my reply.  Here it is again.  Hope it gets through to you.
--
Donna and John, and all,

I would say it is most likely the caterpillar of the Cecropia Moth (Hyalophora cecropia), although the caterpillar of the Columbia Moth (Hyalophora columbia) is fairly similar -- the two moths are quite similar in their adult form, so not surprising that the caterpillars are similar.  In Ontario, Cecropia far outnumber Columbia observations on the iNaturalist database -- over 3000 Cecropia moth records, as opposed to 135 Columbia, so chances are that yours is H. cecropia.  Actually, there are Cecropia X Columbia as well, but I've never seen an adult moth other than in photos.
Here's a link to a photo of an H. cecropia caterpillar that I photographed back when I lived in eastern Ontario.
https://pbase.com/crocodile/image/32106360

bev wigney

Formerly of Osgoode, Ont.

now 
Round Hill, NS.

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[rmb...@istar.ca]

(Although once, as a TA at
> university in a first-year biology course, I spent a surprisingly
> inordinate amount of time trying to tell some first-year students that yes,
> snakes do indeed have bones. I think some of them still didn't believe
> me...)
>
> Cheers,
> Shane

I grew up with people who were convinced that snakes had suction cups
on the bottom side and that milk snakes could suck a cow dry of milk.
I feel your pain in being unsuccessful at convincing them otherwise.

Rose-Marie

[cvetter]

Is it a cecropia moth?

Candice 

Sent from my Galaxy Tab A

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[I Macaulay]

Ah ha But are they really bones or just very good imitations.

No need to respond I am flexible

ian

Senility has been a smooth transition for me.

Note New Hours

Ian Macaulay   Carp, Ontario

Open at 11:AM   Close at 5:00 PM

45.2397 N long: 76.0991 W Elv 137 M UTM
    Don't Forget to Save the Stamps

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[Frederick W. Schueler]

On 07-Aug-24 3:44 p.m., 'John and Donna Greenhorn' via NatureList wrote:
> I tried posting this to Naturelist via the google group page but have heard no comments

* sorry - it came in fine, and looked very Cecropia, but since you were
uncertain, and I don't routinely do caterpillars, and we were very
distracted, and I didn't reply, even after you hadn't gotten any opinions.

fred.
------------------------------------------------------------
---------Frederick W. Schueler & Aleta Karstad ------------
Fragile Inheritance Natural History - https://fragileinheritance.ca/
6 St-Lawrence Street Bishops Mills, RR#2 Oxford Station, Ontario K0G 1T0
on the Smiths Falls Limestone Plain 44.87156° N 75.70095° W
------------------------------------------------------------

[fbrodo fbrodo]

Hi,

What a lovely find. I think that this is a Cecropia Moth caterpillar, Hyalophora cecropia. 

Fenja

 

------ Original Message ------
From: natur...@googlegroups.com
To: natur...@googlegroups.com
Sent: Wednesday, August 7th 2024, 15:44
Subject: [NatureList] RE: [Nature List] I think I saw.
 

I tried posting this to Naturelist via the google group page but have heard no comments.  Perhaps it was my use of this page, so just in case I thought I would try again by tacking it onto another caterpillar question…

 

Donna found this caterpillar crawling on a rock wall in the shade of a maple tree.  It is about 4 inches long.  Trying to identify it online has led us in circles.  Perhaps an Emperor moth but it doesn't seem to quite match?  We would appreciate any suggestions. 

Thanks, Donna and John Greenhorn

 

 

From: 'I Macaulay' via NatureList [mailto:natur...@googlegroups.com] 
Sent: Wednesday, August 07, 2024 11:30 AM
To: Eastern Ontario Natural History Listserve <natur...@googlegroups.com>
Subject: [NatureList] I think I saw.

 

I spotted a fuzzy green ( Almost Chartreuse) abt 30MM  caterpillar as I was walking up the drive with my hands full.

I think it was an Automeris io, but have never seen one before and can no longer find the one I spotted.

 

Do these exist here and if so what in a cedar woods would it be hanging out on.

 

Ian

 

 

 

Senility has been a smooth transition for me.

 

Note New Hours

Ian Macaulay   Carp, Ontario

Open at 11:AM   Close at 5:00 PM

45.2397 N long: 76.0991 W Elv 137 M UTM
    Don't Forget to Save the Stamps

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[P Auritus]

Ah! Fake bones! We have all been fooled!

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[P Auritus]

Wait.... snakes don't have suction cups? Milk snakes don't drink milk?

Next you will tell me that whale sharks aren't whales, honey badgers aren't made of honey, and koala bears aren't tiny grizzlies...

Shane

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