Grasslike Mantis: Essential Facts and Intriguing Details

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The grass-like mantis, or Thesprotia graminis, is a fascinating little creature that might easily go unnoticed due to its excellent camouflage abilities. It can be found in the southeastern United States, blending seamlessly into its natural environment of pine needles and grasses. This mantid species is notable for its light brown to green coloration, making it difficult to detect in its surroundings.

Despite being relatively small and cryptic, the grass-like mantis is a capable predator. Utilizing specialized raptorial front legs, it efficiently grasps its prey, much like the well-known raptor’s claws. These capable predators are interesting not only for their hunting skills but also for their intriguing physical characteristics and habits.

One such characteristic is the difference in wing development between male and female grass-like mantids. While females lack wings, males have well-developed wings, making them very capable flyers. This sexual dimorphism is not uncommon in the mantid family, adding to the charm and allure of these fascinating insects.

Grasslike Mantis Overview

Thesprotia Graminis

The grass-like mantis, scientifically known as Thesprotia graminis, is a small and cryptic mantid species. They are native to the southeastern United States and are characterized by their light brown to green coloration, allowing them to blend in with pine needles and grass.

Order Mantodea

Mantises belong to the insect Order Mantodea. These fascinating insects are known for their:

  • Specialized front legs (raptorial)
  • Grasping prey ability
  • Iconic praying posture

Family Thespidae

Grass-like mantis belongs to the Family Thespidae, which consists of related mantid species.

Genus Thesprotia

Within the Thespidae family, grass-like mantis falls under the Genus Thesprotia. This genus comprises species that share similarities with Thesprotia graminis.

Comparison of Grass-like Mantis with other mantis species:

Feature Grass-like Mantis Chinese Praying Mantis Carolina Mantis
Size Small Large (3-4 3/8 inches) Medium
Native Southeastern U.S. Non-native Eastern U.S.
Color Light brown to green Brown or green Camouflage coloration

Key characteristics of Grass-like Mantis:

  • Light brown to green color, aiding in camouflage
  • Smaller size compared to other mantis species
  • Native to the southeastern United States

Identification and Appearance

Sexual Dimorphism

The Grasslike Mantis, or Thesprotia graminis, displays sexual dimorphism, meaning there are differences in appearance between males and females. Key differences include:

  • Size: Females typically range between 47-56mm while males are smaller.
  • Wings: Males have well-developed wings, while adult females are wingless.

The elongate body and sexually dimorphic characteristics can aid in their identification (source).

Camouflage and Protective Mimicry

Grasslike Mantises are well-adapted for blending into their surroundings. Their body shape and coloration help them mimic natural vegetation, such as:

  • Pine needles
  • Grass

This camouflage also extends to their foretibiae and pronotum, making them even more difficult to detect (source). Their color can range from light brown to green depending on their habitat.

For a better understanding, here’s a comparison table of some key Grasslike Mantis features:

Feature Description
Size 47-56mm for females, smaller for males
Body Shape Elongate
Wings Well-developed in males, absent in females
Camouflage Mimics pine needles and grass, light brown to green coloration
Sexual Dimorphism Pronounced, evident in size and wing presence

Juveniles exhibit similar camouflage characteristics as adults, allowing them to blend in with their environment from a young age. This helps them avoid predators while also being effective hunters themselves.

Habitat and Range

The grass-like mantis, also known as Thesprotia graminis, is a small, cryptic species found primarily in the southeastern United States. Their range stretches across states such as Florida and Georgia.

These mantids have evolved to blend in seamlessly with their surroundings. Their natural habitat consists mainly of:

  • Pine needles
  • Grass

This extraordinary camouflage ability makes them difficult to detect in their natural environment, providing them with an advantage when hunting prey.

The grass-like mantis is not considered a neotropical species, as it is native to North America. In contrast, neotropical mantises are typically found in South America and other tropical regions.

To sum up the differences between the grass-like mantis and neotropical species:

Feature Grass-like Mantis Neotropical species
Habitat Pine needles and grass Rainforests and tropical regions
Range Southeastern United States South America

Life Cycle and Reproduction

Egg Cases

The grass-like mantis reproduces by laying eggs, which are deposited into protective structures called oothecae. These egg cases:

  • Provide protection from predators and environmental factors
  • Are typically attached to plant stems or other surfaces

For example, the Thesprotia graminis creates an ootheca that camouflages well with its surroundings.

Nymphs and Molts

After hatching, the young mantises, called nymphs, emerge. These nymphs:

  • Resemble miniature versions of adult mantises
  • Go through a series of growth stages called molts

During each molt:

  1. The nymph sheds its old exoskeleton
  2. The new, larger exoskeleton forms and hardens

The number of molts varies among species, but generally, grass-like mantises will reach adulthood after several molts.

Feeding and Diet

The grasslike mantis, also known as Thesprotia graminis, has an insectivorous lifestyle, primarily feeding on a variety of insects. Some examples of their diet include:

  • Flies
  • Moths
  • Beetles
  • Butterflies

The mantis is often found in grassy areas, waiting patiently to ambush unsuspecting prey. When an insect comes close, it quickly captures and consumes it.

One advantage of their insectivorous diet is that they help control populations of harmful insects, such as pests. However, they may also feed on beneficial insects like pollinators, which can be a disadvantage.

To better understand the grasslike mantis diet, here is a comparison table between two closely related species, Thesprotia graminis and Chinese praying mantid (Tenodera sinensis):

Grasslike Mantis (Thesprotia graminis) Chinese Praying Mantid (Tenodera sinensis)
Preferred habitat Grassy areas, pine needles Gardens, fields
Diet Insectivorous Insectivorous
Types of insects consumed Flies, moths, beetles, butterflies Flies, moths, beetles, butterflies, others

In conclusion, the grasslike mantis is an interesting and beneficial insect due to its diet, which includes many pest species. Their insectivorous lifestyle allows them to be an essential part of maintaining a balanced ecosystem.

Predators and Defenses

Cryptic Lifestyle

  • The grass-like mantis is a small, cryptic species that blends in with its surroundings.
  • Its coloration ranges from light brown to green, allowing it to camouflage among pine needles and grass (source).

Flight Abilities

  • Grass-like mantis have functional wings, enabling them to fly and evade predators.
  • They use their wings in combination with their cryptic lifestyle to avoid being detected by predators.

Comparison Table

Feature Grass-like Mantis True Bugs
Protective Mimicry Mimics pine needles and grass for defense Some species mimic leaves or twigs
Camouflage Coloration varies for better blending Coloration may also vary for camouflage
Hearing Apparatus Unknown Many species have well-developed hearing
Flight Abilities Functional wings for flight Most have wings for flight

In summary, the grass-like mantis has a cryptic lifestyle providing it with natural camouflage and mimicry that helps it avoid detection by predators. Additionally, its functional wings allow for flight when necessary, further helping it evade potential threats.

Caring for the Grasslike Mantis

Housing and Environment Requirements

  • Size: Use a small terrarium (12x12x12 inches) for one mantis.
  • Ventilation: Ensure good airflow with a mesh lid.
  • Substrate: Opt for a mix of coco fiber and sand.
  • Climbing space: Provide twigs, branches, and other vertical structures.
  • Humidity: Keep between 40-60%, with daily misting.
  • Temperature: Maintain an ideal range of 70-85°F.

The grasslike mantis is a small, cryptic species that blends easily with pine needles and grass. Providing a suitable environment is key to ensuring optimum health and growth. Keep a close eye on humidity and temperature while giving them ample climbing space.

Food and Feeding Requirements

  • Diet: Primarily feed smaller insects like fruit flies, house flies, and small crickets.
  • Feeding frequency: Offer food daily for nymphs, every few days for adults.

The grasslike mantis is a predator that actively searches for its prey. As such, a care guide recommends feeding them live insects like fruit flies for very young mantids, and house flies for larger ones. Make sure to offer a regular supply of food, adjusting the frequency as the mantis matures.

Comparison of Grasslike Mantis and Carolina Mantis

Feature Grasslike Mantis Carolina Mantis
Size Small (1.5-2 inches) Medium (2-2.5 inches)
Color Light brown to green Mottled gray, brown, or green
Climbing ability Excellent Good
Adaptability Requires specific care More versatile
Best suited for beginners No Yes

When considering whether to care for a grasslike mantis or a Carolina mantis, evaluate their differences in appearance, climbing ability, adaptability, and suitability for beginners. The grasslike mantis may be more challenging to care for, but is an excellent choice for those seeking a unique and beautiful pet mantid.

Interesting Facts

The Grasslike Mantis, scientifically known as Thesprotia graminis, is a fascinating insect found in the southeastern United States. It possesses several distinctive features that make it unique among other mantids.

These small, cryptic mantids have a light brown to green color that allows them to easily blend in with their surroundings, such as pine needles and grass1. Their slender bodies resemble a walkingstick, adding to their impressive camouflage skills. Thesprotia graminis belongs to the Thespidae family.

Some key characteristics of the Grasslike Mantis include:

  • Slender bodies
  • Long antennae
  • Dorsal spine on the metathorax
  • Flightless females

Adult Thesprotia graminis typically range between 47 and 56 mm in length2, with females being larger than males. The females are notable for their flightless nature, as they lack wings3. In contrast, the males have well-developed wings and are very capable of flying.

These mantids are known to inhabit areas like Key West, where their cryptic nature makes them difficult to detect. They use their tympana, auditory organs, to perceive their environment and locate prey.

Here’s a comparison between Grasslike Mantis and Chinese Mantis:

Feature Grasslike Mantis Chinese Mantis
Size 47-56 mm Up to 5 inches
Color Light brown to green Pale green to tan
Wings Flightless females Both males and females have wings
Tympana Present Present

In terms of biology, the Grasslike Mantis is an understudied species. However, these insects provide a fascinating example of adaptations that enable them to thrive in their environment.


  1. Thesprotia graminis (Scudder, 1878)

  2. Thesprotia graminis

  3. Grass-Like Mantid, American Grass Mantid

Reader Emails

Over the years, our website, has received hundreds of letters and some interesting images asking us about these insects. Scroll down to have a look at some of them.

Letter 1 – Grasslike Mantis


whats this bug? walking stick?
It looks like a walking stick but it has wings and only 4 legs. Could this be something else? I found it on my house this afternoon. I live in Ocean Springs, MS.

Hi Andrew,
This appears to be a Grasslike Mantis, Thesprotia graminis, a winged male. It is a southern species that is often confused for a Walkingstick.

Letter 2 – Grasslike Mantis


praying mantis
This is Maude, my pet praying mantis. I know that she is a female because she has laid about 6 or 7 small pinkish egg cases. I think she may be a grass-like mantis but I am not sure. I would really appreciate any info you have on her. I found her near my home in Lynn Haven, FL. near Panama City. By the way, I love this site!

Hi Rachel,
Maude is indeed a Grasslike Mantis, Thesprotia graminis. Other names include Grass Mantid, Grass Mantis, Walkingstick Mantis, and Walkingstick Mantid. This species is found in the Southern states. Males are winged and strong fliers. The posture of carrying the raptor front legs stretched out forward is characteristic of this mantis.

Letter 3 – Grasslike Mantis


stick mantis?
I found this 3” mantis-like on my 2 nd story front porch in St. Helena Island, SC (on the SE corner of SC). It’s head is so indistinguishable I can’t tell if the head is the part sticking down or up. It is light brown in color. Very camera shy… I had to coax it back on top of the railing for these pics. Sorry about the photo quality… all I had at the ready was a camera phone. Many thanks for your assistance!
Brendagael Beasley~Forrest

Hi Brendagael,
This is a Grasslike Mantis, Thesprotia graminis, the only member of its genus in North America. BugGuide has submissions from Georgia, Florida, Louisiana and Texas.

Letter 4 – Grasslike Mantis


a picture for you
Could you please identify this "Walkingstick". It was found on the wall (it was praying head down) on our front porch in Vero Beach, Florida. The length from head to tail is 3.46 inches. No green is evident on the legs and no thick striped section on legs so may not be the Northern Walking stick, Diapheromera femorata
John Beukers

Hi John,
This is actually a Grasslike Mantis, Thesprotia graminis.

Letter 5 – probably female Grasslike Mantis


Please help us settle a question
August 2, 2009
A little girl caught this insect at Brazos Bend State Park yesterday, and brought it back to the Nature Center for identification.  Some of the volunteers said it was a Walking Stick.  Others said it was some type of Mantid, possibly a juvenile since it did not appear to have wings.
Please let me know what it really is so I can let the little girl know..
Thank you very much.
Glen Kilgore
Brazos Bend State Park Volunteer (southeast Texas)

Female Grasslike Mantis
Female Grasslike Mantis

Hi Glen,
This is most definitely a Mantis, and we believe it is a female Grasslike Mantis, Thesprotia graminis based on images posted to BugGuide.  According to BugGuide:
A long, slender mantis that is often confused with a walkingstick, especially when it moves with its forearms outstretched. Males have long wings and are good fliers. Females are wingless and resemble a pine needle.”  Since the timestamp of your email indicates you contacted us an hour ago, you can go online and show the girl the answer to her question.


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