Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Interested in a 2022 BugGuide gathering in New Mexico?

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events

Cattail Toothpick Grasshopper - Leptysma marginicollis - female

Cattail Toothpick Grasshopper - Leptysma marginicollis - Female
Jupiter, Florida, USA
July 5, 2004
Shot in a dried wetland area. This is a juvenile as it's wings are not fully developed. I used the "Grasshoppers of Florida" pdf file (1) for identification.


Compare Stenacris, Achurum? (I'm confused!)
Wow, are these things confusing. There are three rather superficially similar "toothpick" grasshoppers:
1-Stenacris vitreipennis--Glassywinged toothpick grasshopper
2-Leptysma marginicollis--Cattail Toothpick Grasshopper
3-Achurum carinatum--Longheaded toothpick grasshopper

Refer to page 8 of Grasshoppers of Florida, Stenacris vitreipennis--Glassywinged toothpick grasshopper. That reference states:

"Similar Species. Stenacris vitreipennis is easily confused with Leptysma marginicollis (Serville), but in L. marginicollis the head is as long as, or longer than, the pronotum whereas in S. vitreipennis the head is shorter than the pronotum. The antennal segments, although flattened, are not nearly as wide as in L. marginicollis."

Hmm. I can't quite tell on your photo--the pronotum thing. Then, what about Achurum carinatum--Longheaded toothpick grasshopper? See page 2 of this PDF. All three are looking alike to me--I need to look at the print version of that book--the illustrations are clearer. I'd really like to see these things--am envious of your Florida escapades.

Thanks, as always, for the great photos. I'm just trying to figure these out for myself. Can you tell me how you reached the id. here?

Patrick Coin
Durham, North Carolina

These are tough but...
Hey Pat,

I know, these grasshopper keys are tough. I had to look a bunch of words up to make sure I was doing this correctly.

Longheaded Toothpick Grasshopper - I know this wasn't A. carinatum. For one, this was a much bigger, and thicker bodied, grasshopper (and it still wasn't full grown!) So I marked that one off the list of possibilities.

The Pronotum - Now, the pronotum is the dorsal (top) plate on the thorax. In this photo you can see that the head is just as long as the pronotum, in fact, it may be a tad longer. So one point for L. marginicollis.

Antennea - If you compare the antennae segments in the little jpegs on the "Grasshoppers of Florida" pdf, you can see the difference in the width between the 2 species.

Surfing around the internet, I found one image of S. vitreipennis at Gallery of Florida Insects, again you can see the thinner antennea. University of Guelph has an image of an adult L. marginicollis which illustrates the wider antennea segments and which looks closer to this image. So I deduced that this was a nymph of Leptysma marginicollis...

Again, I am an amateur. I work with what I can find to make these determinations, but I am always open to be corrected or taught by more learned bugpeople (like Eric:)

Hope this helped...

another comment
Thought I'd throw in another comment relating to Achurum. A few quick and easy traits that are usually visible in photos. The "knee" of the hind femur in Achurum has very distinctive points that stick backward (not so in the other two genera). The eyes of Achurum aren't striped prominently. Achurum has a concave face. This photo isn't Achurum, but if you go to that genus, you can see these things quite clearly. Achurum also lacks the prominent spur on the "throat" between the front legs that the other two have (but you have to pose the insect to photograph this). There are other similar looking "toothpick" genera, but they aren't a consideration in the southeast. Your ID as Leptysma is correct and well done.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.