Wasp Moth Facts: Unveiling Nature’s Fascinating Mimicry

folder_openInsecta, Lepidoptera
comment9 Comments

Wasp moths, as their name suggests, are unique creatures that resemble both wasps and moths. You might be surprised to learn that they’re not actually wasps but are instead a group of beautiful and fascinating moths. With their striking patterns and clever mimicry, wasp moths have a lot to offer in terms of intrigue.

These moths belong to the family Erebidae and subfamily Arctiinae, mastering the art of disguise as they mimic the appearance of stinging wasps to ward off predators. Some familiar examples include the White-tipped Black moth and the Scarlet-bodied Wasp moth. As you delve into the world of wasp moths, you’ll discover that they have a variety of colors and patterns, often specific to their respective regions.

Another interesting aspect of wasp moths is their life cycle, which includes egg, larva, pupa, and adult stages. Throughout these stages, wasp moths undergo remarkable transformations and exhibit various self-defense strategies. Now that you’re equipped with basic knowledge about these fascinating creatures, you’re ready to explore more about their unique characteristics and behavior.

Scientific Classification

The wasp moth is a fascinating insect belonging to the kingdom Animalia and the phylum Arthropoda. Its scientific classification comprises the following categories:

  • Class: Insecta
  • Order: Lepidoptera
  • Family: Erebidae
  • Subfamily: Arctiinae
  • Genus: Cosmosoma

One notable species of wasp moth is the Cosmosoma myrodora, also known as the scarlet-bodied wasp moth. This particular species was first described in 1907.

It’s important to note that the wasp moth is not a wasp, but rather a moth that resembles a wasp. In the order Lepidoptera, it shares similarities with other moths and butterflies. The family Erebidae, however, is where it starts to differentiate itself. Wasp moths belong to the subfamily Arctiinae, which is known for its vibrant and unique coloring.

In comparing wasp moths to regular moths, you can observe the following unique features:

  • Wasp-like appearance
  • Bright colors and patterns
  • Mimicry through resemblance to stinging wasps

These characteristics serve as a form of protection for the wasp moth, as predators are deterred by the threat of a potential sting. By resembling a wasp, the moth is able to steer clear of dangerous encounters.


Wasp moths are fascinating insects with unique features. Their adult form exhibits a captivating combination of colors that contribute to their striking appearance. The abdomen, usually black or metallic blue, contrasts beautifully with their thorax which typically sports a bright shade like dark orange or red.

Some wasp moths have transparent wings, which show delicate patterns of black or metallic blue setae. A distinctive feature of these moths is the flocculence on their bodies, which are soft, fluffy, black hairs that provide a touch of texture to their look.

Here are some key characteristics of the wasp moth:

  • Abdomen: Black or metallic blue
  • Thorax: Dark orange or red
  • Wings: Transparent with black or metallic blue patterns
  • Setae: Delicate hairs on wings and body
  • Wingspan: Varies depending on species
  • Dorsal and Ventral: Display different colors and patterns

When comparing the wasp moth to a regular wasp, their resemblance is undeniable. However, the bright colors and unique wing patterns set them apart, making them an intriguing subject for nature enthusiasts or anyone who loves learning about insects.

Remember, while their appearance might be intimidating, wasp moths are harmless creatures that contribute to the balance of our delicate ecosystems. So next time you encounter one, take a moment to appreciate its beauty and uniqueness.

Lifecycle and Reproduction

Wasp moths are fascinating creatures with unique lifecycle and reproduction habits. In this section, we will briefly explore their journey from egg to adult.

Eggs: Female wasp moths lay spherical eggs on host plants. These eggs are a crucial first step in the wasp moth’s life cycle.

Larvae: Once the eggs hatch, the larval stage begins. Larvae or caterpillars feed on the host plant to grow. Each larva will molt several times before reaching the pupal stage.

Pupa: The pupa, or cocoon, is created when the fully grown larva wraps itself in a protective case. Pupation usually occurs in concealed places like leaf pouches or soil. Inside the cocoon, the larva undergoes a transformation into an adult moth.

Adult: Upon emerging from the cocoon, the adult wasp moth begins its courtship and mating process. Males and females engage in elaborate mating rituals to find suitable partners for reproduction.

Some key features of the wasp moth lifecycle include:

  • Females laying spherical eggs on host plants.
  • Larvae feeding on host plants for growth and development.
  • Pupa formation in concealed places for protection.
  • Courtship and mating rituals among adult wasp moths.

Keep in mind that variations may occur between different wasp moth subspecies, but these are the general stages of their life cycle. As you learn more about these fascinating insects, you can better understand their role in the ecosystem and appreciate their unique characteristics.

Distribution and Habitat

You can find Wasp Moths across various states in the United States, such as Florida, South Carolina, Texas, Mississippi, Louisiana, and Georgia. They are also prevalent in the Caribbean, including the Florida Keys.

Wasp Moth habitats include:

  • Forests
  • Parks
  • Gardens
  • Meadows
  • Agricultural fields

In the southern states like Florida, you may frequently encounter these moths in your backyard, while in other regions, they might be more common in unmanaged natural spaces. These moths have adapted to various environments. Let’s take a look at a comparison table to understand their distribution better:

Location Wasp Moth Presence
Florida Common
South Carolina Moderate
Texas Moderate
Mississippi Moderate
Louisiana Moderate
Georgia Moderate
Caribbean Common
Florida Keys Common

Given the broad range of the Wasp Moth, it’s essential to know and understand their distribution and natural habitat so you can protect and appreciate their presence in the environment.

Diet and Predation

The Wasp Moth is an interesting specimen when it comes to its diet and predation habits. Known for their preference of feeding on certain plants, these moths tend to favor host plants from the Asteraceae family. For instance, some commonly found host plants for Wasp Moths include:

  • Mikania scandens
  • Mikania micrantha
  • Mikania cordifolia
  • Eupatorium capillifolium (Dog Fennel)

Many of these plants, such as Mikania scandens and Eupatorium capillifolium, offer a rich source of nutrition for the Wasp Moth larvae, ensuring their proper growth and development.

When it comes to the predators of Wasp Moths, these insects have evolved certain strategies to avoid becoming a meal themselves. By mimicking the appearance of a dangerous wasp, they manage to confuse and deter predators. Natural enemies are usually found on the ground, so ensuring that they remain undetected is crucial for their survival.

Lastly, it’s essential to consider that while Wasp Moths do not pose any direct threat to humans, their larvae can be harmful to plants like the Oleander plant, as they feed on its leaves and can cause significant damage. So, it’s important to be mindful of their presence in your garden or surrounding areas.

In summary:

  • Wasp Moth larvae feed on specific host plants from the Asteraceae family.
  • Their predators include various natural enemies found on the ground.
  • Wasp Moths use their appearance to mimic dangerous wasps and avoid predation.
  • Their larvae can be harmful to Oleander plants and other vegetation.

Defense Mechanisms

As you observe the fascinating world of wasp moths, you’ll discover that they have unique defense mechanisms to protect themselves from predators. The polka-dot wasp moth and its caterpillar display various strategies to deter potential threats.

One of the prominent defense mechanisms that you might find interesting is mimicry. The polka-dot wasp moth convincingly resembles a dangerous wasp in appearance and behavior, which discourages predators from attempting an attack. Meanwhile, the caterpillars have evolved to resemble the larvae of stinging insects, making them less appealing to predators.

Another important component of the wasp moth’s defense system is their chemical defense. Here’s a quick list of features related to this mechanism:

  • The caterpillars feed on toxic plants to assimilate specific toxins, which are useful in their defense.
  • They store these toxins to use as a chemical weapon against predators.
  • Adults transfer these toxins to their offspring through a nuptial alkaloidal garment during mating.

This hazardous chemical cocktail helps wasp moths repel predators and protect themselves from harm. Caterpillars with more prominent toxins in their system have a higher likelihood of avoiding predation.

These defense mechanisms are crucial for wasp moths to survive in their environment and thrive in their ecological niches. With their clever use of mimicry and chemical warfare, they have secured a successful strategy to evade predators while continuing to reproduce. So, the next time you encounter a wasp moth or caterpillar, keep in mind the fascinating world of their defensive tricks.

Interactions with Other Species

Wasp moths belong to the family of moths called Sesiidae and they closely resemble hymenoptera. Their interactions with other species are crucial to their survival and the ecosystem as a whole.

One interesting interaction involves Trichonephila clavipes, more commonly known as the golden silk orb-weaver spider. The wasp moth’s larvae are known to feed on these spiders, making them both predator and prey in their ecosystem. Golden silk orb-weavers build large, strong webs perfect for capturing prey, but wasp moths may still escape.

Another fascinating relationship is between wasp moths and Hyphantrophaga sellersi, a type of parasitoid wasp. These wasps lay their eggs inside wasp moth larvae, essentially using them as incubators. As the eggs hatch, the developing wasp larvae consume the host moth larvae from the inside out.

Here are a few key points about wasp moths and their interactions:

  • Wasp moths feed on Trichonephila clavipes
  • Hyphantrophaga sellersi lay eggs inside wasp moth larvae
  • Wasp moths and hymenoptera have similar appearances

In addition to these specific interactions, wasp moths also have connections with other parasitoid wasps belonging to the family Tetrastichinae. These small wasps parasitize a variety of hosts, including wasp moths.

In your garden, you might notice wasp moths pollinating flowers or helping control pest populations. By understanding their interactions with other species, you can create a thriving and balanced ecosystem.

Human Interaction

Wasp moths are a fascinating group of insects that can sometimes interact with humans. For instance, certain species could be considered pests, while others play vital roles in the ecosystem. Let’s explore some aspects of human interaction with these moths.

At the University of Florida, researchers have studied wasp moths and their impact on the environment. They found that many species serve as pollinators and could be beneficial to plant life.

On the other hand, some wasp moths may cause harm. According to a study published in the Proceedings of the National Academy of Sciences, a few species have been known to cause damage to agricultural crops, turning into pests for farmers.

In order to identify and understand these insects better, you can rely on websites like iNaturalist, which provides valuable resources for identifying and documenting various species of wasp moths.

When dealing with potential pests, it’s crucial to have a clear understanding of the moth species and its life cycle. Experts like Chin-Lee and Alan have studied these insects and can provide insights into their biology and behavior.

Benefits of wasp moths include:

  • Pollination of plants
  • Pest control, as some species prey on problem insects
  • Contribution to ecosystem diversity

Drawbacks of wasp moths include:

  • Damage to crops by certain species
  • Attraction to light, which might lead to them becoming a nuisance around homes

All in all, human interaction with wasp moths can vary between beneficial and harmful depending on the species and the specific situation. By understanding more about these insects and their roles in the ecosystem, you can make informed decisions about how to coexist with them.

Notable Varieties and Subspecies

One well-known variety of wasp moth is the Syntomeida epilais, also known as the Oleander Moth or Polka-dotted Wasp Moth. This species features a beautiful combination of bright colors and striking patterns, which serve as a warning to predators. The moth’s primary host plant, the oleander, contains toxic compounds that the caterpillars absorb and retain in their bodies, making them unpalatable to predators.

The subspecies Syntomeida epilais epilais, a variant of the main species, can also be found. They share similar features, but may vary slightly in size, color, or pattern. Here are some fascinating characteristics about these wasp moths:

  • Distinctive polka-dotted black and metallic blue wings
  • Narrow black and orange-tipped abdomen resembling a wasp
  • Highly adaptive to various habitats, including urban areas

A comparison between Syntomeida and another wasp moth variety, Walker, could reveal these differences:

Feature Syntomeida (Oleander Moth) Walker (Another Wasp Moth)
Size Medium-sized Generally smaller
Color Black and metallic blue Varying colors
Pattern Polka dots Different patterns

In summary, the Oleander Moth and its subspecies, Syntomeida epilais epilais, are intriguing examples of wasp moths. Their striking appearance, toxic defense mechanism, and adaptability make them fascinating subjects for further study and appreciation.


Below are some key references to help you understand wasp moths better:

  • One resource that can provide insights on the behavior of the Edwards wasp moth (Lymire edwardsii) is the EDIS paper on the topic. Here, you’ll find information about controlling the caterpillars with Bacillus thuringiensis without harming other creatures or leaving chemical residues.

  • To learn more about wasps’ importance as pollinators, check out the United States Forest Service’s guide on wasp pollination. This guide explains the crucial role wasps play in pollination and their place in the Hymenoptera order, along with bees and ants.

Remember that when learning about wasp moths, it’s essential to:

  • Keep your research focused on credible sources to ensure accuracy.
  • Compare information from different references to gather a comprehensive understanding.
  • Feel free to seek out additional reputable sources to further expand your knowledge.

By following these guidelines and exploring the suggested references, you’ll have a solid foundation to better understand wasp moths and their role in nature. Keep up the good work!

Reader Emails

Over the years, our website, whatsthatbug.com 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 – Wasp Moth from India: Euchromia polymena


February 24, 2010
Was seen in Goa India in January this year
Central Goa, India

Wasp Moth: Euchromia polymena

Dear GMT58,
This is surely a gorgeous Wasp Moth, one of the Arctiid Moths in, we suspect, the Tribe Euchromiini.  We quickly found a matching photograph on the India Nature Watch website, and they are identified as Day Flying Moths, Euchromia elegantissima, with a link to the Moths of Borneo website.  The Cambodian Bugs website also has some photos of this elegant beauty.

Hi Daniel,
Thanks ever so much for your help,

Correction:  January 23, 2014
We just received a comment indicating that this is actually a different species in the same genus: 
Euchromia polymena.  We located a photo on the TrekNature that supports that comment.

Letter 2 – Mating Tiger Moths from the Philippines


Please Identify This
Location: Malaybalay City Bukidnon, Mindanao, Philippines
June 20, 2011 12:30 am
Hello, I have seen this small tiny flying creature in our Backyard and in some of my friends backyards. I want to know if this is a moth or a butterfly and what kind of a specie it is. Took this picture for my 365project (http://www.365project.org/altadc). Thank you so much.
Signature: Alta

Mating Tiger Moths

Hi Alta,
We originally believed these might be Wasp Moths or Clearwings in the family Sesiidae.  The mating pair demonstrates dramatic sexual dimorphism.  We tried searching the family and Philippines, and immediately found a match on TrekNature that agrees with our family identification, and a comment provides this species name:
Amata heubneri, and indicates it is a Tiger Moth in the subfamily Arctiinae.  Then things get really confusing.  The Butterfly House website has images of a mating pair of Amata heubneri that do not exhibit the sexual dimorphism.  We are relatively confident that these are diurnal Tiger Moths in the subfamily Arctiinae, but we may need additional time on the species ID.

Diurnal Tiger Moth

Julian Donahue, noted Arctiid Expert, provides some information
Beautiful and fascinating photo. Using the “old” classification, this is in the tiger-moth family Arctiidae, subfamily Ctenuchinae, and a member of the Old World group of genera. It is NOT Amata huebneri, but rather the male appears to be Ceryx flaviplagia, described from Mindanao by Hampson in 1898, or something very close to it. The female, however, may represent sexual dimorphism (common in this group) or an extreme melanic individual (also fairly common). It is very likely that the female was described as a distinct, separate, species, because it is so different from the male (also a very common occurrence, a confusion usually not resolved until mating observations such as this one provide evidence that two “species” are actually the same species, or “conspecific.” In fact, the female looks very similar to illustrations I have seen of a moth, described from the female only, as Ceryx chea Druce; the fact that it was also described from Mindanao makes the possibility of conspecificity even more likely.
Be aware, however, that I am working from very old references, and I am not conversant with the latest knowledge about Old World ctenuchines, so further verification and research are necessary to confirm the identification and, more importantly, whether the possibility of conspecificity of these two “species” has been previously reported. This is really exciting stuff that should be pursued further.


Letter 3 – Wasp Moth from Morocco: Amata species


What is this?
Thu, Apr 2, 2009 at 6:54 AM
We have recently seen these unusual (to us anyway!) flying insects and would love to know what they are. We spotted them mating on the grass outside our house one day a few weeks ago (mid march), and then saw quite a few of them flying around for the next couple of weeks. Then in the last few days we have seen their corpses lying around. Unfortunately the picture is not too clear as it was taken with the cellphone camera. The closest thing I have been able to find is a polka dot wasp moth. They have a shiny turquoise abdomen wih 3 distinct shiny orange rings around the middle and one around the top of the abdomen. The wings are black and have creamy coloured spots on them. I would love to know what they are!
Agadir, Morocco

Mating Unknown Wasp Moths from Morocco
Mating  Wasp Moths from Morocco:

Beautiful Bug
Sat, Apr 4, 2009 at 8:20 AM
I spotted this beautiful flying insect around middle of march, and have no idea what it is! I noticed they were mating around this time,and then saw quite a few flying around for the next couple of weeks, then they started dying. I am not a bug person at all, but would love to know what this beautiful creature is. Thanks.
Agadir, Morocco

Unknown Wasp Moth from Morocco
Wasp Moth from Morocco is Amata species

Sun, Apr 5, 2009 at 1:33 AM
Is this a Wasp Moth in Morocco?
Agadir, Morocco

Unknown Wasp Moth from Morocco
Amata species is Wasp Moth from Morocco

Hi Trish,
Thanks for your perseverance in sending us three emails. We are happy your subsequent images are clear and focused. Yes, this is a Wasp Moth. Moths in two different families, Sesiidae and Arctiidae (Tribe Euchromiini) are known as Wasp Moths since they mimic the stinging insects, but are themselves harmless. Your moth is in the tribe Euchromiini and we will check with our friend Julian Donahue, an expert in the Arctiidae, to see if he recognizes the species.

Update: Sun, 05 Apr 2009 21:46:25 -0400
It’s a ctenuchine arctiid in the genus Euchromia, but I’ll have to see if I can get a species name at the Museum tomorrow. Not illustrated in any reference I have at hand.

Update: Tue, 07 Apr 2009
Are you sure it is from “Morocco”?? I checked some references at the Museum yesterday, and there is nothing in Africa or the western Palearctic that matches it.
There are, however, some species from the Moluccas (Indonesia) that are similar, such as Euchromia walkeri from Ternate (Moluccas), and the widespread E. creusa from northern Australia, Fiji, New Guinea, Moluccas, Celebes, New Hebrides, Solomon Islands, Palau, and elsewhere in the western Pacific.
Furthermore, since it appears to be a female, it doesn’t exactly match any figures I saw (there is often great sexual dimorphism in this group). Send the specimen and I can perhaps come up with a better name.

Update:  March 24, 2015
Thanks to philbydog who informed us that this is Amata alicia, and we verified that on African Moths.

Letter 4 – Texas Wasp Moth from Mexico


Subject: What’s this bug??
Location: Tulum Mexico
February 14, 2016 9:21 pm
Please tell me what this funky bug is in my hotel room in tulum Mexico
Signature: Lisa k

Texas Wasp Moth
Texas Wasp Moth

Dear Lisa,
Though it looks like a wasp, the creature that visited you in your hotel room is a Texas Wasp Moth,
Horama panthalon, a harmless creature that mimics a stinging wasp in both its appearance and its diurnal habits.  Thanks to your submission, we were also able to identify this previously unidentified Texas Wasp Moth that has been in our archives since 2007.

Letter 5 – Cecropia Moth Caterpillar parasitized by possibly Brachonid Wasps


Hi– just found your gorgeous site. You can bet I’ll be a frequent visitor! We found this fine, fat, fellow at the far eastern point of the country this weekend, in Pembroke, Maine. I was just admiring this photo, when I noticed the little white blobs on the caterpillar’s skin. Are these wasp larvae? Will he die before he can turn into a moth? Also — I guess he’s a cecropia moth.
Meg in Maine

Hi Meg,
This is a Cecropia Moth, and it does appear as though it is parasitized, probably by a Brachonid Wasp species. If that is the case, sadly, the caterpillar will die before reaching adulthood. The wasp pupa are smaller than we are used to seeing on Sphingidae Caterpillars, so it might be another species.

Letter 6 – Cecropia Moth Caterpillar parasitized by possibly Brachonid Wasps


Hi– just found your gorgeous site. You can bet I’ll be a frequent visitor! We found this fine, fat, fellow at the far eastern point of the country this weekend, in Pembroke, Maine. I was just admiring this photo, when I noticed the little white blobs on the caterpillar’s skin. Are these wasp larvae? Will he die before he can turn into a moth? Also — I guess he’s a cecropia moth.
Meg in Maine

Hi Meg,
This is a Cecropia Moth, and it does appear as though it is parasitized, probably by a Brachonid Wasp species. If that is the case, sadly, the caterpillar will die before reaching adulthood. The wasp pupa are smaller than we are used to seeing on Sphingidae Caterpillars, so it might be another species.

Letter 7 – Yellow Banded Wasp Moth


Wondering what these are…
We snapped this picture in Wekiwa Springs State Park just north of Orlando, Florida today. I can’t find what they are through a Google search, so maybe you can help? Thanks!

Dear CJS,
We are starving and really need to cook some dinner, but we had this nagging desire to open just one more letter. Your letter was short and didn’t give us much of a clue, but when the image popped up, we gasped with delight. What an awesome image of mating Yellow Banded Wasp Moths, Syntomeida ipomoeae. The caterpillars of these beauties feed on the leaves of morning glories.

UPDATE: Syntomeida ipomoeae
July 4, 2010
We just found a yellow banded wasp moth in Alachua county and was doing a bit of research on it. We found it on butterfliesandmoths.org and more information on your site too. Thank you! We also located a pdf that states that citrus is another host for this neat moth. http://www.daff.gov.au/__data/assets/pdf_file/0016/24361/b_draft_citrus.pdf
Your page is 2006/09/14/yellow-banded-wasp-moth/ and I again want to thank you for your site – what a lot of time is put into this resource of yours. It has helped me often.
Edith Smith

Letter 8 – Yellow-Banded Wasp Moth


Unidentified moth? wasp in Florida Everglades
Please identify this critter if you can. I thought it was either a Faithful Beauty or an Oleander moth, but after looking at your web site, I am wrong. I have no clue.

Hi Linda,
This is one of the Wasp Moths, but we are not sure of the species. We will post your image and if we are lucky, someone will write in and identify it. We later contacted noted lepidopterist Julian P. Donahue who gave us the following identification: “it’s Syntomeida ipomoeae (spelled it right from memory, but I had to check!), Arctiidae: Ctenuchinae. Holland (1903) called it the “Yellow-banded Wasp-moth), while Covell (1984) calls it the “Yellow-banded Wasp Moth). This family happens to be one that I specialize in. Gotta run, Julian “


  • Bugman

    Bugman aka Daniel Marlos has been identifying bugs since 1999. whatsthatbug.com is his passion project and it has helped millions of readers identify the bug that has been bugging them for over two decades. You can reach out to him through our Contact Page.

    View all posts
  • Piyushi Dhir

    Piyushi is a nature lover, blogger and traveler at heart. She lives in beautiful Canada with her family. Piyushi is an animal lover and loves to write about all creatures.

    View all posts
Tags: Wasp Moth

Related Posts

9 Comments. Leave new

  • Hi Julian, I definitely live in Morocco which is where I saw quite a few of them flying aound! 🙂 Trish

  • Abdomen in this case is ringed basally with red, followed by two segments of blue and then two ringed red and finally one blue. It is Euchromia polymena and not Euchromia elegantissima. Both exist in India. The link to the Moths of Borneo website in the answer mentions both species.

  • hiya, this is Amata alicia p

  • hello,
    First of all, I have read and understood the previous comments and mails regarding the identification of this arctiid from Morocco.
    Growing in Agadir myself, I have seen these moths quite often in south morocco and nowhere else.
    I beg to differ concerning its identification as Amata alicia. It seems to me that the specimens displayed in the picture are of the Amata mogadorensis species, a species endemic to south Morocco.
    Best regards,
    Ihab HATIM

  • Also found in Kerala. Thanks for the information

  • I’m no expert but the markings on the head are a bit different than the ones in bugguide. I just photographed one in the Yucatan that looks like this one and like the one in the 2007 posting. Could the Yucatan species be a different one than panthalon???

  • Marjorie Boulden
    June 17, 2022 2:19 am

    We just spotted/photographed one (Polymena) in Kandy, Sri Lanka — June 17, 2022. Yellow on wings slightly less vivid, more ochre. Thank you so much for helping us identify!


Leave a Reply

Your email address will not be published. Required fields are marked *

Fill out this field
Fill out this field
Please enter a valid email address.
You need to agree with the terms to proceed