Currently viewing the category: "Caterpillars and Pupa"

Subject:  Caterpillar
Geographic location of the bug:  Southern Chile
Date: 10/20/2021
Time: 07:30 PM EDT
Your letter to the bugman:  Hola from Chile! Here is a lovely fellow we found in our Valdivian rainforest climbing a laurel tree. He is probably around 2 inches long. I’m thinking he is in the Io moth family but he has no racing stripes. Identifying insects in Chile is difficult as there is little information available on line. Many thanks for your help!
How you want your letter signed:  Chile Expat Family

Unknown Giant Silkmoth Caterpillar

Dear Chile Expat Family,
This is indeed a Giant Silkmoth Caterpillar and it does resemble the caterpillar of an Io Moth, and you are likely correct that it is in the same genus
Automeris.  It does look remarkably similar to another Chilean caterpillar that Bill Oehlke identified as likely a member of the genus Ormiscodes.

I guess that entomology course I took 30+ years ago came in handy!

Subject:  Pita pocket or taco?
Geographic location of the bug:  Rhode Island, USA
Date: 10/22/2021
Time: 09:16 AM EDT
Your letter to the bugman:  I found this pita pocket squirming it’s way along the windshield of my van. Never have I seen anything like it! Please help. I saw it the first part of October I posted several photos to show its movement
How you want your letter signed:  S.Plante

Stinging Slug Caterpillar on Windshield

Dear S. Plante,
This is a Stinging Slug Caterpillar in the family Limacodidae.  Alas, the view from underneath, while interesting, is not ideal for species identification.  It might be a Skiff Moth Caterpillar, Prolimacodes badia, which is pictured on BugGuide.

Subject:  Caterpillar eating rhubarb
Geographic location of the bug:  Lancaster, PA
Date: 10/03/2021
Time: 10:06 PM EDT
Your letter to the bugman:  These caterpillars are devastating our rhubarb.    Any idea what they are?
How you want your letter signed:  Joe

Yellow-Striped Armyworm

Dear Joe,
This looks like a Yellow-Striped Armyworm,
Spodoptera ornithogalli, which is pictured on BugGuide.  The Yellow-Striped Armyworm is not listed on the Pacific Northwest Insect Management Handbook of rhubarb pests, but two other members of the genus are listed.  Armyworms and Cutworms are often general feeders and it is sometimes difficult to get a comprehensive listing of all the plants they will feed upon.

Subject:  Caterpillars id
Geographic location of the bug:  Midwest usa
Date: 10/02/2021
Time: 05:31 PM EDT
Your letter to the bugman:  I’ve never seen a caterpillar this big in my life. Is it a danger to my clothing, garden, cats or dogs that may get hold of it? What kind is it?
How you want your letter signed:  stephanie

Imperial Moth Caterpillar

Dear Stephanie,
The midwest is a big place.  More location specificity is always desirable.  This is an Imperial Moth Caterpillar and it will not harm your clothing or your cats or dogs.  Imperial Moth caterpillars are not too particular about the leaves they feed upon and according to BugGuide:  “Larvae feed on leaves of Bald Cypress, basswood, birch, cedar, elm, hickory, Honeylocust, maple, oak, pine, Sassafras (
Sassafras albidum), Sweetgum (Liquidambar styraciflua), sycamore, walnut.”  They do not feed enough to cause a tree damage unless it is a very young tree.

Subject:  Caterpillar ID
Geographic location of the bug:  SW North America (AZ desert)
Date: 09/28/2021
Time: 12:11 PM EDT
Your letter to the bugman:  We found this Sept, 27 early evening in New River, AZ (2,000 ft elevation).  I have not found anything like it in my searches.  The shiny silver barbs on its back come out when agitated.
How you want your letter signed:  DC

Possibly Hubbard’s Small Silkmoth Caterpillar

Dear DC,
This is a Silkmoth Caterpillar in the genus
Syssphinx, possibly a Hubbard’s Small Silkmoth Caterpillar.  Here is a BugGuide image for comparison.

Subject:  What is this bug?
Geographic location of the bug:  Cincinnati ohio
Date: 09/27/2021
Time: 07:48 PM EDT
Your letter to the bugman:  This bug fell from a tree at winton woods park onto my car.
How you want your letter signed:  From Pamela Cupp

Monkey Slug

Dear Pamela,
Upon reading your letter, Daniel immediately suspected correctly that you encountered a Monkey Slug.  These stinging caterpillars frequently fall from trees onto cars.

Thank you.  I’d never seen anything like it.  Appreciate your reply.
Take care,