Currently viewing the category: "Stinging Slug Caterpillars"
What's That Bug? does not endorse extermination

Subject:  Stinging caterpillar? It’s a beauty!
Geographic location of the bug:  San Antonio, Tx, 90 degree October day.
Date: 10/21/2017
Time: 02:10 AM EDT
Hello wonderful bugmen!
I found this beauty in my front yard, my kids and I enjoyed it without touching it. I try to teach appreciation without disturbing. Not sure of what exactly we were appreciating, though, but after searching through your fb feed thought maybe it shared some similarities to a stinging caterpillar? It was only maybe 1-1.5” long, small little thing, but gorgeous nonetheless. Thank you for all that you do! I love your site and appreciate your work!
How you want your letter signed:  Monica Barrientes

Stinging Slug Caterpillar: Euclea species

Dear Monica,
We love your philosophy of educating your children to appreciate the wonders of the natural world while exercising caution.  Many otherwise harmless creatures have developed defenses to protect themselves from predators and other threats, and they do not attach unnecessarily, but caution should be exercised when handling them, though one is often better not handling them.  You are correct that this is a Stinging Slug Caterpillar in the family Limacodidae.  Based on this BugGuide image, we are confident it is in the genus
Euclea, a group that includes the Spiny Oak Slug, but we cannot identify the species with certainty.  According to BugGuide:  “NOTE: BugGuide photos from the southeastern states previously identified as Spiny Oak-Slug Moth (Euclea delphinii) have been moved to the genus page because we have no information (as of December 2006) on how to distinguish adults or larvae of delphinii from the virtually identical Euclea nanina.”  Three members of the genus are found in Texas.  According to BugGuide:  “E. delphinii: southern Quebec and New Brunswick to Florida, west to Texas and Oklahoma, north to Minnesota.  E. incisa: Arizona east to central Texas.  E. nanina: South Carolina to Florida, west to Texas.”

Stinging Slug Caterpillar: Euclea species

What's That Bug? does not endorse extermination

Subject:  Spiky Caterpillar
Geographic location of the bug:  North Vietnam
Date: 09/26/2017
Time: 08:41 AM EDT
Today, we found this caterpillar. Rather, it found us. It stung of us in the head, and hurt like hell. The locals assured us, that it wasn’t dangerous, just unpleasant. What can you tell us about that nasty fellow?
How you want your letter signed:  The three adventurers

Stinging Slug Caterpillar

Dear The three adventurers,
This is a gorgeous image of a Stinging Slug Caterpillar in the family Limacodidae.  We will attempt a species identification.  In the meantime, here is an image from Creative Photography that was also taken in Vietnam, but which is most likely a different species.

What's That Bug? does not endorse extermination

Subject:  Strange bug wearing green vest
Geographic location of the bug:  Westchester County, NY
Date: 09/12/2017
Time: 02:08 PM EDT
Found this strange bug outside our home and have never seen anything like this
How you want your letter signed:  Bug Patrol

Saddleback Caterpillar

Dear Bug Patrol,
Handle with caution.  This is a Stinging Slug Caterpillar known as a Saddleback Caterpillar.

What's That Bug? does not endorse extermination

Subject: Maybe in the Euclidae family?
Location: North of Chiang Mai Thailand
August 20, 2017 12:15 am
I found the caterpillar in Northern Thailand about an hour north of Thailand. It stung someone and want to find more out about it like best treatment as well. It is abot 1.5 THB 2 Cm long.
Signature: Eric

Stinging Slug Caterpilar

Dear Eric,
We were about to disagree with your identification until we learned on Wikipedia (not our favorite site to reference) that Euclidae is synonymous with Limacodidae, the family that contains Stinging Slug Caterpillars.  This does appear to be a Stinging Slug Caterpillar, but we have not been able to locate a matching image online that might lead to a species identification.  We have no medical credentials and we cannot dispense any medical advice, but we would encourage your acquaintance to seek medical treatment if symptoms persist.

What's That Bug? does not endorse extermination

Subject: What is this thing???
Location: South jersey
August 17, 2017 3:34 pm
My friend found this little critter in his yard here in southern New Jersey. It bit him and almost 2 hours later his arm is JUST now going back to normal. What is this?
Signature: Erin

Saddleback Caterpillar

Dear Erin,
We suspect the next time your friend encounters a Saddleback Caterpillar, your friend will look and not touch, since that is the best way to interact with Stinging Slug Caterpillars from the family Limacodidae.

What's That Bug? does not endorse extermination

Subject: Weird insect
Location: Polk County, Texas
August 17, 2017 3:15 pm
Piney Woods area of Texas harbors lots of strange creatures. But this is the first time I’ve ever seen anything like this! What in the heck IS it?
Signature: MaryB

Monkey Slug

Dear MaryB,
This Caterpillar is commonly called a Monkey Slug, but handle with caution as they are capable of stinging.

Thank you so much!  I see lots of strange critters out here in the boonies and this thing is now rated #1 on my weird list.
No touchie, just lookie. 😉
Mary
What's That Bug? does not endorse extermination