What Do Scorpion Flies Eat: A Fascinating Guide to Their Diet

Scorpion flies, despite their intimidating name, are fascinating creatures known for their unique appearance and feeding habits. You might be surprised to learn that scorpion flies are not dangerous to humans and have a varied diet that primarily consists of dead or injured insects.

These insects are efficient scavengers, and you can often find them feeding on deceased insects and other small arthropods. In some instances, they may also consume nectar and plant material, showcasing their adaptability in different environments.

While observing scorpion flies in the wild, you’ll notice that they use their elongated, scorpion-like tail to catch prey. This distinctive trait not only lends to their name but also highlights their remarkable hunting skills. So, if you ever encounter a scorpion fly, you can appreciate it for its role in maintaining balance in the ecosystem, rather than fearing it.

What Are Scorpion Flies

Scorpion flies belong to the Mecoptera order of insects and are a fascinating group of species. They have distinct features that set them apart from other insects, such as their scorpion-like tail, which can be found in males. However, despite their intimidating appearance, these insects are harmless to humans.

Their unique appearance includes elongated faces that resemble a wasp-like structure. They possess large compound eyes, which help them navigate their surroundings. Their membranous wings have various patterns ranging from clear to golden or light-colored with black bands or spots. These insects are typically around 3/8 inch long, and their body color can range from yellowish-brown to rusty tones.

Common scorpionflies are insects that can be found in diverse habitats, including woodlands, gardens, and grasslands. They are known for their peculiar features, such as an elongated beak-like snout, which houses their chewing mouthparts. In addition, the bulbous genitalia at the tip of the male’s abdomen make them look rather formidable.

Some key features of scorpion flies include:

  • Scorpion-like tail in males
  • Elongated beak-like snout
  • Large compound eyes
  • Membranous wings with varying patterns
  • Yellowish-brown to rusty body color

These insects are not only unique in appearance but also play an essential role in their ecosystem. As predators and scavengers, they help in controlling pest populations and maintaining a balanced environment. So, the next time you come across one, take a moment to appreciate their fascinating characteristics and their essential role in the ecosystem.

Anatomy of Scorpion Flies

Body Structure

Scorpion flies, scientifically known as Panorpa spp., have a distinct appearance characterized by a moderately sized body, about 3/8 inch long. Their color is usually yellowish-brown or rusty with black bands or spots. You’ll notice a long, narrow face due to their elongated beak which contains their chewing mouthparts.

Wings and Flight

These insects possess four long wings displaying varying patterns of golden, clear, or light-colored hues combined with black bands or spots. While at rest, scorpion flies hold their wings swept back, forming a V-shape.

Scorpion-Like Tail and Genitalia

An intriguing feature of male scorpion flies is their bulbous, scorpion-like tail, which is actually their genitalia. Though intimidating in appearance, this up-curled “stinger” is completely harmless, serving a key role in reproduction.

In short, scorpion flies have the following distinct features:

  • Yellowish-brown or rusty body with black bands
  • Long wings, held in a V-shape at rest
  • Elongated beak for a narrow face
  • Bulbous and up-curled genitalia in males, resembling a scorpion tail

Understanding this unique anatomy will help you in discussing what scorpion flies eat, as certain traits are specifically designed to capture prey and assist in their survival.

Behavior of Scorpion Flies

Mating Rituals

In the world of scorpionflies, the mating rituals can be quite fascinating. Males perform elaborate displays to attract a female for reproduction. One interesting aspect of this behavior is the nuptial gift the male offers to the female. This gift may be food, like a captured insect, which can increase the male’s chances of successful mating. This behavior highlights the importance of the nuptial gift in the courtship process.

Feeding Habits

Scorpionflies are predators with a diet primarily consisting of small insects. However, they aren’t picky eaters and will scavenge from dead insects when necessary. The scorpion fly’s unique mouthparts help them to feed effectively. Located at the end of a long beak-like structure, these chewing mouthparts allow them to consume their prey with ease. Some key features of their feeding habits include:

  • Predation on small insects
  • Scavenging dead insects
  • Utilizing specialized mouthparts

Their feeding habits underscore the importance of the scorpion fly in nature as natural predators and scavengers.

Life Cycle of Scorpion Flies

Larval Stage

In the larval stage, scorpion flies resemble caterpillar-like larvae with prolegs. These tiny creatures hatch from eggs and go through several stages of growth, called instars. During this stage, they mainly feed on dead or decaying plant and animal matter. As a part of their life cycle, they also molt, shedding their old exoskeleton to make room for growth.

Pupal Stage

After the larvae have grown enough, they transition into the pupal stage. They find a hidden spot, such as under leaf litter or bark, and start to pupate. During this phase, they remain immobile, as their bodies undergo significant change – transforming into fully grown adults.

Adult Stage

When scorpion flies emerge as adults, they sport a long snout and unique wing patterns. Adult scorpion flies have an intriguing diet, which includes preying on other insects, feeding on nectar, and scavenging on carrion. Adult male scorpion flies can be identified by their scorpion-like feature at the end of their abdomen, while females do not have this feature.

During the adult stage, scorpion flies focus on mating and laying eggs to continue their life cycle. According to Missouri Department of Conservation, the scorpion-like tail of the male is harmless and is only used during mating.

Remember, the life cycle of scorpion flies is essential to understanding their behavior, diet, and ability to thrive in their environment. Appreciating this fascinating insect can enhance your observation of nature and may even inspire more interest in the entomology world.

Habitat of Scorpion Flies

Scorpion flies find their home primarily in woodlands and grasslands. These environments provide them with a suitable living space, offering an abundance of damp leaf litter and decaying vegetation where they can thrive.

They are frequently found in areas with moss and hedgerows, both of which contribute to their preferred damp conditions. You may even come across them in wilder parts of your garden if such habitat elements are present. Some key features of scorpion fly habitats include:

  • Damp leaf litter
  • Decaying vegetation
  • Moss-covered areas
  • Hedgerows and thickets

The presence of scorpion flies can indicate a healthy and diverse wildlife ecosystem. Their habitats support a variety of creatures, many of which are harmless to humans, just as scorpion flies are.

In summary, a typical habitat for scorpion flies will consist of woodlands, grasslands, damp leaf litter, decaying vegetation, and hedgerows. You can find them in both rural and urban settings, including gardens, making them an integral part of many ecosystems. Just remember, they are harmless to humans, so there’s no need to worry if you encounter one in your backyard.

Diet and Hunting Techniques

Preferred Prey

Scorpionflies primarily feed on dead and dying insects, which makes them scavengers in the insect world. Their diet includes a variety of bugs such as flies, bees, and butterflies. They are also known to consume certain animals and plant matter. For example:

  • Dead animals
  • Insects caught in spider webs
  • Plant nectar
  • Fruit pieces

Hunting Techniques

While they don’t possess a stinger, scorpionflies use their unique features to locate and secure their prey. Their long, beak-like faces are actually an adaptation that allows them to access hard-to-reach food.

When hunting, scorpionflies often rely on their excellent flying skills. They can swiftly hover around, searching for potential food sources. Once they find a suitable target, scorpionflies use their powerful legs, along with their elongated and flexible mouthparts, to grab and hold onto their prey.

Always remember, scorpionflies may look frightening, but their tail-like appendages are not stingers and are completely harmless. So next time you encounter one, you can appreciate their unique appearance and the important role they play in nature.

Scorpion Flies and Humans

Scorpion flies are insects with distinct appearances, often resembling long-faced wasps. Their male abdomen tips look similar to a scorpion’s stinger, but are actually completely harmless. Although at a glance they may appear threatening, you will find that scorpion flies pose no harm to humans.

As you discover more about scorpion flies, you’ll notice their wings often have a black-banded or black-spotted pattern. The insects are typically yellowish-brown in color. While observing scorpion flies in their natural habitat, you don’t need to worry about your safety since their “stingers” aren’t actually venomous or harmful to you.

Interesting Facts

Scorpionflies are fascinating insects that have captured the attention of scientists and insect enthusiasts alike. In this section, you’ll learn about the intriguing diet of scorpionflies and other interesting aspects of their life and biology.

Scorpionflies, belonging to the family Panorpidae, are known for their distinct appearance. With their elongated faces and bulbous, scorpion-like tail in males, they are easily recognizable. Scorpionflies mainly feed on dead insects, spiders, and other small arthropods. They also consume nectar from various flowers, especially in the common scorpionfly.

Snow scorpionflies are another interesting group of insects closely related to scorpionflies. They come from the Boreidae family and are known for their ability to survive in cold environments. The diet of snow scorpionflies mainly consists of mosses and dead organic matter.

Mecoptera is the order that includes both scorpionflies and snow scorpionflies, along with other less familiar insects such as hangingflies (Bittacidae family). These diverse groups of insects share some common features:

  • Elongated bodies
  • Chewing mouthparts
  • Membranous wings
  • Complex mating rituals

Evolution plays a significant role in the adaptations observed in the Mecoptera group. Fossil records show that these insects date back as far as the Permian era, around 299 to 251 million years ago. Their evolution has resulted in the development of various features that aid in their survival, such as their unique feeding habits and morphology.

Forensic entomology, which is the study of insects and their interaction with crime scenes, has found applications for scorpionflies. Since they feed on dead insects and decaying organic matter, their presence could potentially serve as indicators of time since death in some cases.

In general, scorpionflies have a relatively light weight as compared to some other insect groups like Diptera (flies), which makes them adept at maneuvering through their environments with ease.

In conclusion, scorpionflies and their relatives are fascinating creatures with intriguing feeding habits and characteristics that have been shaped by millions of years of evolution. They also hold potential applications in fields such as forensic entomology, further adding to their appeal as remarkable members of the insect world.

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 – Scorpionfly


Subject: Bug for ID
Location: Tiddesley Wood, Pershore, UK
September 6, 2014 9:41 am
Saw this rather beautiful ‘fly’ and wondered what it was! I have a better quality image if you would like it.
Signature: Jean Booth


Dear Jean,
Our email submission system is able to handle large digital files and we would love to get a higher resolution image of this Scorpionfly in the order Mecoptera.  We found some matching images on Olympus System Talk UK, but they are not identified to the species level.
  Bugs and Weeds identifies it as Panorpa communis, and there are some nice images on Nature Spot.  Your individual is a female.  Please send a higher quality image.

Higher Resolution image attached


Thanks Jean,
That is much better.

Letter 2 – Scorpionfly


Subject: Confirm ID of beetle
Location: Anahuac National Wildlife Refuge, TX
November 19, 2014 11:45 am
Recently my wife and I were at the Anahuac National Wildlife Refuge in Texas photographing the waterfowl. This beetle which I am gussing is the Long Jawed Longhorn Beetle landed on our windshield and I took the picture from inside of our car with my iPhone. I didn’t get to see his top view, but this really shows a long jaw. Can you confirm his ID.
You may use the picture any way you like, but please mention my name as the photographer.
Signature: Joseph A. Sinka


Dear Joseph,
This impressive insect is not a beetle, but rather a Scorpionfly in the order Mecoptera and most likely in the genus
Panorpa.  According to BugGuide:  “Adults feed mainly on dead/dying insects, rarely on nectar/fruit.”

Hi Daniel,
Thanks, I don’t think I could have ever identified him as a Scorpionfly.  I just looked it up in my field guide and the size of the one I saw was somewhere between 1″ to 1-1/2″ long; much larger than the 3/8″ mentioned in the guide.
I don’t know how common they are, but this is a first for me.
Thanks for your help and I plan to go back again this weekend,

Letter 3 – Scorpionfly


Subject: Winged beasty
Location: Newark, Delaware
March 21, 2015 10:20 am
Can you help to identify this strange-looking creature? I spotted this little guy about 5 months ago around October. He was walking along a lumber pile at the lumber yard I work at. The lumber yard backs right up to a wooded area that is part of a state park on the banks of the Christina river. Thanks!
Signature: amateur entomologist


Dear amateur entomologist,
Your stange beastie is a Scorpionfly in the genus
Panorpa.  According to BugGuide, they are generally found on:  “low shrubs and ground cover in densely-vegetated woodlands, often near water or wet seeps; grasslands; cultivated fields; forest borders adults are usually seen resting on leaves in shaded areas less than a metre from the ground.”  They are harmless creatures and according to BugGuide:  “Adults feed mainly on dead/dying insects, rarely on nectar/fruit:  Larvae scavenge on decaying organic matter or dead insects; may prey on soil insects.”

Letter 4 – Scorpionfly


Subject: New to me
Location: Washington state greater Seattle area
March 25, 2016 8:35 am
Lived at this location for 15 years and just this spring I have seen a couple of these. Any ideas?
Signature: Cdm


Dear Cdm,
This is a member of the insect order Mecoptera which includes Scorpionflies, Hangingflies, and Earwigflies and we believe we have identified it as a member of the genus
Brachypanorpa, most likely Brachypanorpa oregonensis based on this BugGuide image and the range which is listed as Oregon and Washington.  Of the family, BugGuide states:  “Larvae are scarabaeiform and found in the soil where they presumably feed on plant roots.”


Letter 5 – Scorpionfly


Subject: WHat kind of bug
Location: Canadian, Oklahoma
October 12, 2016 2:55 pm
Not sure I’ve ever seen one like this before.
Signature: G Lynn


Dear G Lynn,
This is a marvelous image of a harmless Scorpionfly.  According to BugGuide:  “Adults feed mainly on dead/dying insects, rarely on nectar/fruit.”


  • 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.

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  • 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.

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