Tag: grasshoppers

Diversification of Agroecotettix: Grasshoppers of Aridland Scrub in the United States and Mexico

16 new species of Agroecotettix were identified from the United States and Mexico.

Guest blog post by JoVonn Hill

Back in 2018, I began conducting fieldwork on grasshoppers in Texas. Among the specimens I collected that year, I noticed something intriguing—what appeared to be a new species of Agroecotettix. That initial discovery set the stage for years of research, stretching through 2024. During this time, I continued to collect Agroecotettix specimens and studied collections from several institutions, including the Academy of Natural Sciences in Philadelphia, the University of Michigan Museum of Zoology, Brigham Young University, and the Mississippi Entomological Museum.

Agroecotettix aristus.

By analyzing these specimens, I identified 16 new species of Agroecotettix from the United States and Mexico. Interestingly, most of these species are associated with mountainous of Texas and Mexico. Some also inhabit the South Texas Plains ecoregion and the Edwards Plateau.

Habitat and Behavior of Agroecotettix

Agroecotettix grasshoppers are often found on thorny, leguminous shrubs such as Acacia and Vachella. Mesquite is typically not a host. In the Big Bend region of Texas, I often found them on Sotol—sometimes consuming pollen, other times seeking shade beneath the leaves during the heat of the day.

Individuals of Agroecotettix dorni roosting during the heat of the day on Dasylirion leaves

One sweltering day in Big Bend National Park, it was 113°F, and I was trudging through Boquillas Canyon, searching for grasshoppers. After two hours of seeing a couple grasshoppers, I was ready to leave. Then, glancing up, I spotted 40 or 50 grasshoppers clustered on the undersides of Sotol leaves, sheltering from the mid-day sun. Many of them were Agroecotettix, alongside other flightless desert grasshoppers like Phaulotettix and Netrosoma. It was just like picking fruit off a tree—no net needed.

A view from Big Bend National Park.
Agroecotettix crypsidomus.

Much of what we now know about Agroecotettix species stems from the work of Dr. Theodore Cohn. During the 1950s and 1960s, he conducted extensive fieldwork in Mexico, often in areas that are now too dangerous to access. His collections were invaluable for identifying several of the new species, highlighting the enduring importance of historical specimens and natural history collections.

Naming these species offered a unique opportunity to honor individuals and ideas that have influenced me such as:

Image of LeVar Burton courtesy of Super Festivals under a CC BY 2.0 license
  • LeVar Burton: One species is named after this the Reading Rainbow and Star Trek icon. Burton is an American treasure who has inspired a love of reading in millions, including me. As a child, I grew up watching Reading Rainbow and later found myself reading those same books to my own kids during school events.
Image of Ted Turner courtesy of by Kingkongphoto & www.celebrity-photos.com from Laurel Maryland, USA under a CC BY-SA 2.0 license
  • Ted Turner: Another species honors Ted Turner, the entrepreneur and conservationist. Turner’s efforts to preserve vast swaths of the western U.S. have will have a lasting impact on biodiversity.
Image of Michael Dorn courtesy of Supercon Conventions under a CC BY 2.0 license
  • Michael Dorn: Known for playing Worf on Star Trek, Dorn inspired another species name. Work was always my favorite character. A portion of this species anatomy resembled a Klingon weapon, making the connection apt.
  • IDIC: One species is named after the Vulcan philosophy of “Infinite Diversity in Infinite Combinations.” This Star Trek principle seemed a fitting name for a species in this group of cryptic species.
  • Jay Silverheels: another species honors Silverheels’ cultural impact and the Texas landscapes where the series was set. A Native American athlete and actorwho most famously portrayed the fictional character Tonto in “The Lone Ranger” television series from 1949-1957, Silverheels was one of the first Native American actors to portray a major Indigenous character on a television series. Throughout his career, Silverheels advocated for more inclusion of Indigenous people in media and founded the Indian Actors Workshop in Los Angeles during the 1960’s.
Image of Clayton Moore courtesy of twm1340 under a CC BY-SA 2.0 license
  • Clayton Moore: Known for playing the Lone Ranger, “moorei” honors Clayton Moore for his portrayal of this fictional Texas Ranger that embodied justice, bravery, and connection to the American West.
  • Frida Kahlo: The species name kahloae patronym the iconic Mexican painter known for her vivid and symbolic artwork.  Her enduring connection to Mexican culture makes her an apt figure to be commemorated through this species, which is endemic to Mexico.

Exploring the Agroecotettix genus has been a journey into the unexpected. What began as a few curious specimens turned into the discovery of 16 species (and counting). The biodiversity of this group, particularly in Mexico, is likely even greater than we currently realize.

The natural world never ceases to amaze. Just when you think you’ve seen it all, you look a little closer using new techniques or tools—and suddenly, there’s a universe of diversity waiting to be discovered.

Research article:

Hill JG (2024) Desert diversification: revision of Agroecotettix Bruner, 1908 (Orthoptera, Acrididae, Melanoplinae) with descriptions of sixteen new species from the United States and Mexico. ZooKeys 1218: 177-230. https://doi.org/10.3897/zookeys.1218.133703

New grasshopper species from central Texas honor Willie Nelson and Jerry Jeff Walker

These findings highlight the rich biodiversity of the region, emphasizing the importance of conservation efforts in the area.

A group of researchers from the Mississippi Entomological Museum taking break after exploring a site in Texas for grasshoppers. Left to right: Brady Dunaway, JoVonn Hill, Matthew Thorn. Photo by JoVonn Hill

The central region of Texas is a known hotspot of biological wonders. For the last five years, Dr. JoVonn Hill, an Assistant Professor and Director of the Mississippi Entomological Museum (MEM) at Mississippi State University, and his colleagues have made scientific expeditions to the area that have now revealed an extraordinary find.

The team uncovered seven previously unknown flightless grasshopper species, six of them endemic to the Edwards Plateau, which underscores the region’s extraordinary biodiversity.

With this discovery, Dr. Hill is paying tribute to two iconic musicians. In recognition of the “immense contributions” of Texas legends Willie Nelson and Jerry Jeff Walker, he has named two of these flightless grasshopper species after them.

Melanoplus nelsoni held by Dr. JoVonn Hill. Photo by JoVonn Hill

“Melanoplus nelsoni and Melanoplus walkeri immortalize the enduring contributions of these legendary musicians and their connection to Texas,” he says.

Melanoplus walkeri.

“After these last few summers [of field studies], just like Mr. Nelson, we too have a little Texas in our souls,” he writes in his study, which was just published in the journal ZooKeys.

On Melanoplus walkeri, he writes: “Walker’s songs such as Hill Country Rain, Leavin’ Texas, and Sangria Wine brought me and my field team joy while traveling between field sites and added to the amazing ambiance of the Edwards Plateau.” In fact, the artist recorded his most influential album not far away from the spot where the new species was discovered.

Additionally, the team acknowledges the cultural heritage and deep connection to the region of the Comanche and Tonkawa tribes, naming two species after them, Melanoplus commanche and Melanoplus tonkawa respectively.

“These designations recognize the profound historical and cultural significance of the tribes in the region,” Dr. Hill explains.

Melanoplus tonkawa.

“These seven newly described species, alongside two preexisting ones, form a cohesive species group, highlighting their shared characteristics and evolutionary relationships,” Dr. Hill says in conclusion. “The formation of this new species group presents a significant contribution to our understanding of the diverse ecosystems present in central Texas,” he adds.

Melanoplus commanche.

The discovery of these seven flightless grasshopper species and the formation of a new species group underscore the ecological uniqueness of central Texas, Dr. Hill says. He and the staff of the Mississippi Entomological Museum remain committed to scientific exploration and understanding, promoting the conservation of biodiversity, and inspiring a sense of wonder and appreciation for the natural world.

Research article:

Hill JG (2023) Diversification deep in the heart of Texas: seven new grasshopper species and establishment of the Melanoplus discolor species group (Orthoptera, Acrididae, Melanoplinae). ZooKeys 1165: 101-136. https://doi.org/10.3897/zookeys.1165.104047

The amazing diversity of the Caribbean pygmy jumping leaves

Pygmy grasshoppers come in many shapes and colors and are often exciting to see, but their taxonomy is a mess.

Guest blog post by Josip Skejo & Niko Kasalo

A lovable mess

Tetrigidae, commonly known as pygmy grasshoppers, are an ancient and diverse family, currently numbering about 2000 species. As their name suggests, tetrigids are very small; their largest representatives are barely several centimeters long, so they might be difficult to spot on a casual stroll through tropical vegetation. However, when they are spotted, they are immediately recognizable by their elongated pronotum, a hard structure that starts behind the head and covers the entire body like a hood. They come in many shapes and colors and are often exciting to see, but this comes with a price—the taxonomy of Tetrigidae, the way they are organized into natural groups, is a mess. This is where we come in.

The mini grasshoppers that outlived dinosaurs: the fascinating world of Tetrigidae

In our latest paper, we dealt with Choriphyllini, a small Caribbean tribe that belongs to the subfamily Cladonotinae. This subfamily had been filling up with unrelated but similar-looking tetrigids for more than a century. It had never been clearly defined so almost everything wingless and robust was assigned to Cladonotinae. We decided to put an end to this by slowly removing the superficially similar genera from the subfamily and describing tribes to group the genera that are clearly related to each other. We piloted this system just last year, when we described the tribe Valalyllini from Madagascar, with only two endemic (and endangered) genera and species.

The diversity and the distribution of the tribe Valalyllini, the Malagasy dead-leaf-like Cladonotinae. Both species are endemic to small areas and are likely endangered because of deforestation. Both species most probably inhabit rainforest leaf litter.

Put the species of Choriphyllini and Valalyllini together, mix them up, and try to guess which belongs where—this is no simple task; they are all doing their impressions of dead leaves that our primate brains struggle to differentiate. And there’s more: such leaf-like grasshoppers live in Africa and South East Asia as well, and then there are those that look like twigs and spiky tree bark.

Only now that we have an idea of what the true Cladonotinae are can we be properly amazed by the duality they represent to us. On the one hand, they are incredibly diverse with every species having its own variation on the basic shape. On the other, they are so alike that they either represent the best example of convergent evolution ever documented or they all stem from a common ancestor that is currently supposed to have lived during the Mesozoic. The evolutionary history of Cladonotinae will take many years to unravel, but the work can only begin after we define what to call by that name.

Valalyllum folium, a member of the tribe Valalyllini, subfamily Cladonotinae. This species, endemic to Madagascar, is a relative of Choriphyllini.

It only took 250 years

The first species of Choriphyllini, Phyllotettix rhombeus, was described in 1765 as Cicada rhombea, that is, as a member of an entirely different order of insects. Continuing in this manner, many authors (including the great Linnaeus himself) made many taxonomic and nomenclatural mistakes that compounded over the centuries and made these grasshoppers difficult to identify and refer to. It didn’t help that new species and new records kept being reported without being contextualized by comprehensive literature reviews. Like detectives, we followed the scattered crumbs of data and arrived at a synthesis that will make future research in the region much more pleasant.

Hancock’s plate I from the “Tettigidae of North America” shows leaf-like Caribbean species under the numbers 1), 2) and 7), but has many taxonomic and nomenclatural errors. 1) – Phyllotettix foliatus (= female holotype of Hancock’s Choriphyllum foliatum), 2) – Phyllotettix rhombeus (= Hancock’s Choriphyllum westwoodi), 7) – Choriphyllum saussurei. (= Hancock’s Phyllonotus saussurei). Source: Biodiversity Heritage Library, available at https://www.biodiversitylibrary.org/item/25899#page/10.

This is not where interesting facts about Phyllotettix rhombeus stop. While looking through the literature, we tried to extract the measurements of drawings. Most of the drawings had a scale bar printed next to them, but the archaic usage of “lines” as the standard measurement initially gave us some trouble. That is why at first we doubted one of our most fascinating discoveries: with the pronotal length measuring nearly 3 centimeters, Phyllotettix rhombeus is the largest tetrigid ever recorded! Many, many authors dealt with this species over the last 250 years, but this record was never made explicit.

It should not go unnoticed now that its proposed common name is “Jamaican Colossal Jumping Leaf”. Inspired by this, we took the measurements of the other species as well and made a figure where all the specimens are resized to a common scale, which shows the diversity of both shapes and sizes.

The genera and species of the tribe Choriphyllini. All specimens are drawn to scale.

Besides P. rhombeus, there are three more species in the genus Phyllotettix: P. plagiatus, P. foliatus, and P. compressus. All four of them are known only from Jamaica. P. foliatus and P. compressus are known from the Blue Mountains, but for the other two no precise localities are known; we still don’t know where exactly the largest tetrigid lives. The other genus of the tribe is Choriphyllum, also with four species. Three of them, C. sagrai, C. saussurei, and C. wallaceum live in Cuba, while C. bahamense is all alone on Hummingbird Cay island in the Bahamas. The easiest way to differentiate these two genera is a little strange but practical, the tallest point of the leaf-like crest in Choriphyllum species is in the front, while in Phyllotettix species it is in the back.

A map of all known Choriphyllini records. For three species, not a single precise locality is known.

Some Caribbean leaves dance and jump

For each species, we proposed a common name as a means to give these animals even more character. Names, such as “Jamaican Bitten Jumping Leaf” and “Old Cuban Dancing Leaf” may not be “official”, but they have certainly found their audience. The tweet in which we shared the collage of all the species was viewed over 17000 times; everyone was amazed by the pretty shapes and some even noted that they especially liked the crazy common names. We were very glad to see our scientific and artistic package that is Choriphyllini be so warmly received.

Another hit on Twitter, with over 20000 views, is the post showcasing the newly-described species from Cuba, Choriphyllum wallaceum. The holotype of this species has been awaiting description for a long time. We found it in Museo Nacional de Ciencias Naturales in Madrid, Spain, with a note from Ignacio Bolívar, the father of the Tetrigidae classification system. He referred to it as “Choriphyllum Seoanei” but never managed to publish it.

This “new” species presented us with the perfect opportunity to honor the 200th anniversary of Alfred Russel Wallace’s birth. Wallace is often called the “father of biogeography” but is all too often neglected when discussing the origins of the theory of evolution, with which Charles Darwin is considered synonymous. Wallace, with his independent arrival at the key concepts of the evolutionary theory, his correspondence with Darwin, and his staunch defense of Darwin’s ideas, was (and is) at the very least equal to Darwin and deserves much more recognition than he currently gets.

Choriphyllum wallaceum, a newly-described species from Cuba, named after Alfred Russel Wallace.

This is just the start

Choriphyllini are a pretty package, but one that merely introduces the real problem. The history of this tribe is long, yet we have very few specimens to work with. Although we have an understanding of how morphology varies within species, P. compressus and P. foliatus are not only suspiciously similar to each other, but they also live in the same general area of the Blue Mountains. It remains to be seen if they are in fact a single species.

Much more pressing is that we have only a vague idea of where these animals live and how their populations are impacted by various factors such as human activity and climate change—we do not have a baseline against which to assess their conservation status. Then there is the fact that there are many more islands in the Caribbean, making the possibility of discovering new Choriphyllini species on them real and exciting. We can only guess what the future holds for these neglected animals.

Old Cuban Dancing Leaf (Choriphyllum sagrai) in its natural environment among the leaf litter in Cuba, photographed by Sheyla Yong.

The stage is set; everything we know about this group is laid out in the paper and now there is no path but forward. Research is expensive, dedication to this work takes a certain kind of soul, and everything takes time. It is our sincere hope that someone someday takes this further. The pygmy jumping leaves will wait for as long as they can, on their islands, hopping without a care in the world.

References:

Deranja M, Kasalo N, Adžić K, Franjević D, Skejo J (2022) Lepocranus and Valalyllum gen. nov. (Orthoptera, Tetrigidae, Cladonotinae), endangered Malagasy dead-leaf-like grasshoppers. ZooKeys 1109: 1-15. https://doi.org/10.3897/zookeys.1109.85565

Skejo J, Yong S, Bogić D, Kasalo N (2023) Caribbean pygmy jumping leaves (Tetrigidae, Cladonotinae, Choriphyllini). Deutsche Entomologische Zeitschrift 70(1): 129-141. https://doi.org/10.3897/dez.70.98982