Currently viewing the category: "butterfly caterpillars"
What's That Bug? does not endorse extermination

Subject: Striped caterpillar
Location: Prince Edward County, Ontario, Canada
August 26, 2015 6:11 am
Any clue as to what this is going to turn into?
Signature: Susan

Black Swallowtail Caterpillar

Black Swallowtail Caterpillar

Dear Susan,
This is a Black Swallowtail Caterpillar, and we suspect that parsley, carrots or some other related plant was found in the immediate vicinity of the sighting.

Many thanks – what wonderful service.  I’m so glad I moved the caterpillar out of harm’s way!  We have lots of Queen Anne’s Lace nearby….
Goddess of Chuckery Hill

Aundrea Murillo-Faynik, Sue Dougherty, Ann Levitsky, Paula Mullen, Mary Lemmink Lawrence liked this post
What's That Bug? does not endorse extermination

Subject: Caterpillar
Location: southern ontario
August 25, 2015 6:41 pm
thought this might be a eastern swallowtail tiger but it’s black. Any help much appreciated.
Signature: Susan

Tiger Swallowtail Caterpillar

Tiger Swallowtail Caterpillar

Dear Susan,
We cannot begin to speculate if this is an Eastern Tiger Swallowtail Caterpillar or a Canadian Tiger Swallowtail Caterpillar, and we suspect DNA analysis might be needed to determine its exact taxonomy.  Tiger Swallowtail Caterpillars often change from green to orange or purple as they are getting ready to transform into a chrysalis, and they also leave the trees whose leaves they were feeding upon in search of an ideal location for pupation.  In light of the variation in color of Tiger Swallowtails, from light to dark and in between, and even more strangely because of the presence of gynandromorphs, the correct term for an hermaphrodite, we can’t help but to wonder if the especially dark coloration of your individual might lead to a variation in the adult Tiger Swallowtail.

A duplicate sighting
Subject: Caterpillar
Location: MacTier, Ontario, Canada
August 25, 2015 10:19 am
Found this caterpillar on the greens at Rocky Crest Golf Course in MacTier, Ontario (CANADA). Would like to know what it is. Thanks.
Signature: Tricia McLelland

Dear Tricia,
This exact image was submitted by Susan and we responded.

Funny, as it was me who discovered it and took the photo. I have no idea who Susan is. Thanks.

Mary Lemmink Lawrence, Sue Dougherty liked this post
What's That Bug? does not endorse extermination

Subject: Caterpillar or what?
Location: South Cebtral Ontario, Canada
August 16, 2015 9:01 pm
This “bug” was discovered on the sidewalk in downtown Burlington, Ontario, Canada (off Lake Ontario). It had a head bobbing motion, and what looks like eyes on the sides of its head (fake illusion eyes?). It “sticks” to whatever it’s on very well and it’s mouth looked like a suction cup. Overall it looks cartoonish, almost right out of A Bugs Life. What is this?
Signature: Curious bugaphobe

Tiger Swallowtail Caterpillar

Tiger Swallowtail Caterpillar

Dear Curious bugaphobe,
This is one of the Tiger Swallowtail Caterpillars, and there are many similar species that are regionally distinct, but that look quite similar physically.  Considering your location, we are guessing this is most likely a Canadian Tiger Swallowtail,
Papilio canadensis, which you can find pictured on BugGuide.

Tiger Swallowtail Caterpillar

Tiger Swallowtail Caterpillar

Kyla Gunter Gatlin, Carrie Woodmas Pratt, Sue Dougherty, Juliett Moth, Kissiah Aiken, Ann Levitsky, Linney Sprout, Mary Sheridan Page Fatzinger, Holly Smith Henry, Amy Gosch liked this post
What's That Bug? does not endorse extermination

Subject: Need to identify this bug please
Location: Reading, UK
July 28, 2015 4:04 am
I have them on my nasturtium and I suspected they hatched from yellow eggs.
Signature: Ahmed

Large White Caterpillars

Large White Caterpillars

Dear Ahmed,
The easiest way to identify an unknown caterpillar is to know the food plant and the location, both of which you provided for us.  We quickly found the answer to be Caterpillars of the Large White,
Pieris brassicae, and the Hortographical site has an excellent posting on these Large White Caterpillars.

Sue Dougherty liked this post
What's That Bug? does not endorse extermination

Subject: bug sucking on a monarch caterpillar
Location: SE Wisconsin
August 3, 2015 5:34 pm
Dear Bugman,
We have swamp milkweed in front of my parents’ house and the monarchs love it. For the first time ever, I found this bug sucking the insides out of one of the caterpillars. This was Aug. 3 at about 5 in the evening. I’m familiar with assassin bugs, but not ones like this. I didn’t kill it, but moved it to another part of the yard so it wouldn’t eat the other caterpillars too!
Signature: A.M.

Immature Spined Soldier Bug eats Monarch Caterpillar

Immature Spined Soldier Bug eats Monarch Caterpillar

Dear A.M.,
The predator is a Predatory Stink Bug, the Spined Soldier Bug in the genus
Podisus, and it is an immature nymph.  This is not the first time we have received an image of an immature Spined Soldier Bug eating a Monarch Caterpillar.

Lisa Maxwell Emanuel, Mary Baum Thorman, Tip Crawford liked this post
What's That Bug? does not endorse extermination

Subject: What is this catapillar
Location: Vestal center ny
July 27, 2015 8:49 am
My kids saw this yesterday in vestal center, New York, which is near Binghamton n y. It was four inches long, brown in color violet dots like a collar yellow giant eyes with a violet dot in the middle,a forked yellow tongue and funky psychedelic colors down its back
Signature: Abby binder

Tiger Swallowtail Caterpillar with Osmeterium

Tiger Swallowtail Caterpillar with Osmeterium

Dear Abby,
This is a Tiger Swallowtail Caterpillar and it has extracted its osmeterium, a forked organ that produces a foul odor to deter predators.  What you have mistaken for “yellow giant eyes” are actually spots that resemble eyes, another defense mechanism to protect the docile caterpillar against predators.

Thank you so much….kids thrilled!

Ann Levitsky, Andrea Leonard Drummond, Sue Dougherty, Mary Lemmink Lawrence, Kitty Heidih liked this post
What's That Bug? does not endorse extermination