Category Archives: Caterpillars and Pupa   rss

What's That Bug? does not endorse extermination

Monkey Slug

What on earth is this?
September 28, 2009
While moving, my friends found this on a cardboard box that had been sitting, undisturbed in a storage room for over a year. It reacted only slightly to being touched, but when a lighter was held a few inches away from, the pustule looking things started to swell and it lifted up a few of its legs (arms?). They’ve left it alone since, except for calling me to take some pictures. In a 24 hour period it’s moved about 4 inches across the top of the box, though rarely moves at all when we’ve been looking at it. We live in southcentral Oklahoma, and the weather has been very hot for months, so the closed off storage room it was in, was very warm, and moderately humid.
curious okie
south central Oklahoma

Monkey Slug

Monkey Slug

Dear curious okie,
This is a Monkey Slug, the caterpillar of the Hag Moth, Phobetron pithecium.  It is one of the Stinging Slug Caterpillars in the family Limacodidae, and it should be handled with caution.

Stinging Slug Caterpillar from Malaysia

Stinging slug caterpillar??
September 28, 2009
Hi,
I live in Malaysia and I found this caterpillar under a leaf in my garden. I’ve checked through you website and the closest one that I can find is the stinging slug caterpillar. Could this be a stinging slug caterpillar? Thanx…
-arina-
Malaysia

Stinging Slug Caterpillar

Stinging Slug Caterpillar

Hi arina,
You are correct.  This is a Stinging Slug Caterpillar, but we are uncertain of the exact species.

Stinging Slug Caterpillar

Stinging Slug Caterpillar

Update from Karl
Daniel:
It is a stinging slug caterpillar and it looks very much like the Blue-striped nettle grub, Parasa lepida (Limacodidae). If that isn’t it it, it must be something closely related. P. lepida is apparently quite common throughout south and southeast Asia, but occurs from Africa to Papua New Guinea and as far north as Japan. Some or all occurrences outside of south and southeast Asia may be unwanted introductions. They are considered a serious agricultural pest wherever they occur, including on palms, rambutan, mango, banana, rubber and tea. And yes, they can inflict a painful sting if touched. The appearance of the larvae varies somewhat by location and stage of development (the blue stripe appears in the third instar), but Arina’s caterpillar looks very similar to the ones posted at http://www.malaeng.com/blog/tmp/2009/09/limacodid1.jpg and http://www.malaeng.com/webboard/index.php?topic=1199.0.  Regards.
Karl

Common Buckeye

Tan and Rust Colored Butterfly
September 27, 2009
Hi,
I’m having no luck identifying this butterfly. I took this photo in a conservation area along the Mississippi river. Any help you can offer will greatly be appreciated.
Thank you!
Sheri
Northeast Missouri

Common Buckeye

Common Buckeye

Hi Sheri,
We believe your butterfly is a Common Buckeye, Junonia coenia.  The dorsal view is quite distinctive.  The ventral view has more subtle, and somewhat variable markings, but we matched your photo to an image on BugGuide.

What's That Bug? does not endorse extermination

Long-Tailed Skipper laying eggs. Caterpillar too!!!

medium butterfly laying eggs on bean plant
September 25, 2009
I discovered this butterfly laying eggs on the two varieties of beans I have growing, a bush type and vine type. The bush type is planted next to a square of soy beans.
The insect is approximately 2 inches wide and their flight pattern is sporadic and jittery with a distinct blue color on her fuzzy bottom, with multi colored through primarily brown wings. I only got a good look while she was laying her eggs, perched on a bean leaf leaving behind a stack on pale yellow eggs (pin head size) on the underside of the leaf. I have found these stacks on the top, bottom, and sides of bush leaves.
Upon further investigation of the plants I discovered many catepillars or larvae nestled in leaf fold cocoons. These are also pictured they are yellow with dark (almost black) heads, two ‘big’ red eyes and tiny necks, tiny black feet closest to the head and yellow orange feet toward end, the larvae/catepillar is yellow in color and has an orange tinge at the rear.
I have included photos though I did not get a wing spread shot. In these you can see the eggs, larvae/catepillar, and butterfly resting on a bean leaf.
betty marie
Sarsota, Florida zone 9/10 for gardening

Long-Tailed Skipper laying Eggs

Long-Tailed Skipper laying Eggs

Hi betty marie,
We applaud your powers of observation.  You have photographed a Long-Tailed Skipper, Urbanus proteus.  We are thrilled to have the photos of the egg laying process as well as the caterpillars.  As your letter supports, the food for the caterpillar includes plants in the pea family.  BugGuide has some wonderful images of this lovely species.

Long-Tailed Skipper Caterpillar

Long-Tailed Skipper Caterpillar

One Eyed Sphinx Moth Caterpillar

Need Caterpillar ID
September 25, 2009
Could you please identify this caterpillar? It was found on a Willow tree this week (September 2009), in Los Angeles, CA. It measures aprox. 1.5 inches long.
S Logan, Los Angeles CA
Los Angeles CA

One Eyed Sphinx Caterpillar

One Eyed Sphinx Caterpillar

Dear S Logan,
What a nice find.  This is a One Eyed Sphinx or Cerisy’s Sphinx Caterpillar, Smerinthus cerisyi.  Bill Oehlke’s Sphingidae of the United States website has images of the adult moth as well as other stages of development.  This is a wide ranging species in North America.  In addition to willow, the larvae also feed on poplar.

Another Unicorn or False Unicorn Caterpillar

Caterpillar found in blueberry bushes
September 23, 2009
I found this caterpillar taking a ride on my son’s shirt during an early morning of blueberry picking. I took its picture on my finger to show the size, and then we happily set it back onto a blueberry bush. I can’t find an identification for it. Thank you!
Nichole
Michigan (Ann Arbor area) in the summer (end of August)

Unicorn Caterpillar, or imposter???

Unicorn Caterpillar, or imposter???

Hi Nichole,
Interestingly, we just finished posting another photo of a Unicorn Caterpillar, or False Unicorn Caterpillar from the genus Schizura.  Your photo with the translucent talon, we mean fingernail, is awesome.

Unicorn Caterpillar? or False Unicorn Caterpillar??

Unicorn Caterpillar? or False Unicorn Caterpillar??

Becker’s White Caterpillar

Yellow caterpillar
September 21, 2009
Once again I need your help! In June I was hiking through Zion National Park in Utah and saw this little yellow caterpillar in a Prince’s Plume flower. I have searched high and low through Caterpillars in the Field and Garden and cannot find this little guy (or gal).
I’m also including this awesome picture of a black widow I took last friday. She was posing beautifully and thought I’d share it.
Thank you for always coming through and helping me!
Holly
Zion National Park, Utah

Unknown Caterpillar from Utah

Becker's White Caterpillar from Utah

Hi Holly,
Sadly, we don’t recognize your caterpillar, and we are a bit pressed for time, so we cannot immediately research this.  We are posting your letter and photo in the hope that that one of our readers might assist you.  Since the range of the Prince’s Plume Flower, Stanleya pinnata, is listed as Southern Utah, we expect that the caterpillar might be relatively easy to identify if it is associated with the plant.  Here is more information on the Prince’s Plume Flower.

Update:
Thanks to Karl’s comment, we now know that this is a Becker’s White (Pontia beckerii) caterpillar (family Pieridae).

Update from Keith Wolfe
September 26, 2009
Hi Daniel,
Hello Holly,
For more excellent Utah photos of the Becker’s White:
http://www.wildutah.us/h_b_pontia_beckeri_immatures.html
In California, where I live, this species also utilizes Bladderpod (Isomeris arborea, family Cleomaceae), and similar to other butterflies whose larvae feed on plant inflorescences, it completes development in relatively few days (egg 3, caterpillar 14, chrysalis 6).
Best wishes,
Keith Wolfe

Red Hump Caterpillar

Caterpillar on Western Redbud
September 21, 2009
Caterpillar on Western Redbud
2 feeding this afternoon in the hot California sun
J serences
Carmichael CA Central Valley

Red Hump Caterpillar

Red Hump Caterpillar

Hi J,
We believe this to be a Red Hump Caterpillar, Schizura concinna, a species of Prominent Moth.  The caterpillars, according to BugGuide:  “feed on a wide range of woody plants.

Unicorn Caterpillar? or False Unicorn Caterpillar, perhaps??

Unicorn Caterpillar
September 23, 2009
Was walking with the 2 year old in the swamp park in Southern Illinois today and found a strange looking caterpillar. Some research has it as a Schizura unicornis (I think…do they eat oak?).
The camouflage was strikingly good from some angles, the green “window” in its mid-section is exactly as translucent as leaves with the sun behind them.
Thought you might like some pictures.
Bert in Illinois
Southern Illinois

Possibly Unicorn Caterpillar

Possibly Unicorn Caterpillar

Dear Bert,
BugGuide lists the food plants of the Unicorn Caterpillar as:  “alder, apple, Trembling Aspen (Populus tremuloides), White Birch (Betula papyrifera), elm, hawthorn, hickory, willow
“, while the closely related and similar looking Morning Glory Prominent or False Unicorn Caterpillar has its food plants listed as:  “leaves of beech, birch, elm, maple, morning-glory, oak, rose, and other woody plants” on BugGuide.  We would entertain the possibility that the list of plants for the Unicorn Caterpillar might be incomplete, and that your caterpillar might be either species.

Tobacco Budworm? or some other caterpillar???

Heliothis virescens
September 22, 2009
Hi,
Well, the yard has exploded with moths, butterflies and caterpillars – counted 11 black swallowtail cats on the dill and parsley, with countless eggs still to hatch, and found 2 empty chrysallises on the porch rail and landscape timbers in the yard. The snaps are full of Buckeye caterpillars which go nicely with the Buckeye flag hanging from the porch (it’s football!! Go Bucks!!) While inspecting the dill, I found this pink striped caterpillar on the Russian sage that’s planted next to the dill (and under the Ohio State flag). It’s been at least 3 days of searching but I think this comes close to BugGuide’s Tobacco Budworm – the description says it tends to take on the color of the plant it’s eating. It was also getting close to sunset, so the light and the flowers on the Russian sage really helped hide this one. Please feel free to correct the ID – I think we’ve looked at over 8 million pictures of pink caterpillars since Saturday night. Thanks!
Kathleen Haines
Newport News, VA (southeastern VA)

Tobacco Budworm

Tobacco Budworm??

Dear Kathleen,
We love the enthusiasm in the tone of your letter.  This looks like it may be a Tobacco Budworm, but we are not certain.  We will post your letter and image and link to the BugGuide page on the species in the hopes that an expert can provide some input.

Tobacco Budworm??

Tobacco Budworm??

Daniel,
Thanks so much!  I’d actually already been to your site before going to my email and was delighted to see the pictures already there.  You all are terrific and do such a good job!
My daughter is an elementary school art teacher and brought her school’s science teacher over yesterday to “harvest” some caterpillars from the yard.  They took 3 or 4 black swallowtail caterpillars, then went to the local garden center and picked up a few dill plants and are hoping to be able to follow the caterpillar to butterfly saga all the way through.  They also found a fuzzy tan caterpillar out on the green cones – the guy looks like he needs a serious day with a hairstylist – that we’re working on identifying.  And this morning, the snaps were covered with at least a dozen Common Buckeye caterpillars.  It’s all just a great reward for planting for butterflies!
Thanks again for your great site and all the good work you do.
Kathy Haines
Southeastern Virginia

Rustic Sphinx Caterpillar

Xylophanes Pluto Moth
September 19, 2009
Here is a photo of the X-Pluto Moth in it’s Green stage at night hanging from a leaf on a Texas Lilac Tree in Garland Texas 9-19-09
Tom Stovall
Garland, TX

Rustic Sphinx Caterpillar

Rustic Sphinx Caterpillar

Hi Tom,
Your photo is quite wonderful and it illustrates this Sphinx Caterpillar in its classic pose that resulted in the name sphinx.  We disagree with your identification.  We believe this is a Rustic Sphinx Caterpillar, Manduca rustica.  The best method for identifying both Sphinx Caterpillars and the adult moths, we believe, is to scan the images on Bill Oehlke’s Sphingidae of the Americas website.  The site has the option of viewing by individual states, so you are able to just search for species found in Texas.  Using that method, we identified your Rustic Sphinx Caterpillar on Bill’s website.

Skiff Moth Caterpillar

Pupa in leaf cocoon
September 19, 2009
Saw this on the stalk of a sapling at Wallops Park in Accomack County on the Eastern Shore of VA on Sept. 19, ‘09. It’s about the size of a periwinkle (1-1.5″). When I brushed the plant and it fell off, it clamped on to a pine shat. I guess it’s a caterpillar of some kind that makes its cocoon out of leaves, but haven’t been able to make a specific ID. I’ve been walking this trail almost every day for the past 17 years, and have never seen anything like it. Any info you can offer would be appreciated. Thanks.
Linda Cuttone
Wallops Park, Accomack County, Eastern Shore of VA

Skiff Moth Caterpillar

Skiff Moth Caterpillar

Hi Linda,
We posted a photo of a Skiff Moth Caterpillar yesterday morning, and you must have overlooked it when you logged onto our website before submitting your question.

Skiff Moth Caterpillar

Skiff Moth Caterpillar


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