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

Subject: Caterpillar in San Diego
Location: Coastal San Diego
July 15, 2017 4:18 pm
Looking to find out what type of caterpillar this is your and what they typically eat. We’re in coastal San Diego and it’s mid July. Something has eaten my tomatoes but not sure it’s the caterpillar or birds.
Signature: Hanna

Tobacco Hornworm

Dear Hanna,
Though it is commonly called a Tobacco Hornworm, this caterpillar is frequently found feeding on tomato plants.  Here is a BugGuidetobacc image for comparison.

What's That Bug? does not endorse extermination

Subject: caterpillar
Location: bulgaria
July 6, 2017 11:52 am
Hello, can you recognize this?
Signature: mr

Deathshead Hawkmoth Caterpillars

Dear mr,
These are Deathshead Hawkmoth Caterpillars, and the name refers to the markings on the adult Deathshead Hawkmoth.  The moth was prominently featured in advertising for the film Silence of the Lambs.

What's That Bug? does not endorse extermination

Subject: caterpillar
Location: east end Moloka’i
June 29, 2017 11:21 am
Aloha, Found this guy yesterday here on east end of Moloka’i , haven’t found a description to match.. hope you all can help Mahalo, Terry
Signature: Terry

Oleander Hawkmoth Caterpillar

Dear Terry,
Like many plants and creatures found in Hawaii, the Oleander Hawkmoth Caterpillar is a non-native, introduced species.

What's That Bug? does not endorse extermination

Subject: Caterpillar on Virginia creeper
Location: Winnipeg, Manitoba
June 25, 2017 8:02 pm
Hi there. I found this caterpillar along with some baby caterpillars and what could be eggs on my Virginia creeper vine. There are holes in the leaves. Not sure if the babies are the same caterpillar.
It looks like a shiny brown globe on its butt, interesting… Is it a fake eye to distract predators?
Signature: Maggie

Abbott’s Sphinx Caterpillar

Dear Maggie,
This is an Abbott’s Sphinx Caterpillar,
Sphecodina abbottii, which we verified by comparing your individual to this BugGuide image.  According to BugGuide:  “Larvae feed on Grape, Vitis and Ampelopsis” and though it is not mentioned, Virginia Creeper is in the same family as grape and many caterpillars that feed on grape will also feed on Virginia Creeper.  BugGuide data does not report any Manitoba sightings, and Sphingidae of the Americas does not list the species among those found in Manitoba.  Though Sphingidae of the Americas does not include any reports from Manitoba, the species page does indicate a caterpillar “was spotted on Virginia Creeper in early August in Quebec.”  We are going to contact Bill Oehlke to inform him of your Winnipeg sighting which might be an indication the species is moving north due to global warming.  We hope you will allow him to post your image on his very comprehensive site.

Absolutely. I also have some pics of baby caterpillars, and eggs, which could be the same species – all in the same vicinity of the adult. I’m including them here…
I have spotted a Waved Sphinx here as well. Thanks for the id. I hope it doesn’t destroy my vine, but I’ll leave it.

Possibly Sphinx Moth Eggs

Dear Maggie,
The eggs do resemble those of a Sphinx Moth and the caterpillar with the caudal horn is definitely a Sphinx Moth Caterpillar, however there are other species that feed on Virginia Creeper and we cannot state for certain that your early forms are Abbott’s Sphinx.  According to the Sphingidae of the Americas, the Achemon Sphinx is reported from Manitoba and the site states:  ”
Eumorpha achemon larvae feed upon Grape (Vitis), Virginia Creeper (Parthenocissus quinquefolia) and other vines and ivies (Ampelopsis).

Sphinx Caterpillar Hatchling

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Subject: Northern California Caterpillar
Location: Northern California
May 20, 2017 10:57 pm
Hi, saw this little guy outside tonight and just wondering what he might turn into
Signature: Rachel

Whitelined Sphinx Caterpillar

Dear Rachel,
This is but one color variation of the highly variable Whitelined Sphinx Caterpillar,
Hyles lineata, and this BugGuide image is a very good color match to your individual.  The high rainfall we had this past season produced plants upon which the caterpillars feed, and we expect to be getting reports of caterpillar population explosions, especially from desert areas.  Our own porch light has attracted numerous adult Whitelined Sphinx Moths this spring. 

What's That Bug? does not endorse extermination

Subject: Caterpillar eating plumeria leaves
Location: Puerto Vallarta
May 10, 2017 6:37 am
Normally, the only caterpillars that eat plumeria leaves are tetrio and an occasional starving monarch. This young one, munching away in Puerto Vallarta this May, has everyone stumped – no one has seen one before. Any ideas?
Signature: Diana

Hornworm:  Isognathus leachii

Dear Diana,
The forward facing, filamentous, caudal horn is quite unusual in this caterpillar, and we suspect like the Tetrio Sphinx, it is a Hornworm in the family Sphingidae.  We do not recognize it either and we are going to request assistance from Bill Oehlke.  It if is a Sphingiid, we suspect Bill may request permission to use the images on his very comprehensive site.

Hornworm:  Isognathus leachii

Update:  Thanks to a comment from Bostjan Dvorak, we have learned that this Hornworm is Isognathus leachii.  According to Sphingidae of the Americas:  “Larvae have long tails; colouration suggests they are unpalatable to birds.”

Hornworm:  Isognathus leachii

Many thanks for the follow-up: I’ve posted in the plumeria Facebook forums. You now have Mexican Pacific coast to add to the confirmed range, and plumeria as a larvae host plant, and like tetrio, they eat a lot of leaves! I’ve also alerted Dr. Criley at the Univ of Hawaii in case it shows up in their groves.  Excellent work!

What's That Bug? does not endorse extermination