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Species Profile

Snowberry Clearwing Moth

Hemaris diffinis

Bee disguise, moth wings, day shift.
Jay Ondreicka/Shutterstock.com

Snowberry Clearwing Moth Distribution

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Found in 58 states/provinces

Snowberry Clearwing Moth

At a Glance

Wild Species
Also Known As Hummingbird moth, Hummingbird clearwing, Clearwing hummingbird moth, Bee hawk-moth, Clearwing sphinx moth
Activity Diurnal+
Lifespan 10 years
Status Not Evaluated
Did You Know?

Adult wingspan is typically about 38-51 mm as reported in North American hawk-moth references (e.g., Tuttle, 2007).

Scientific Classification

Hemaris diffinis is a diurnal (day-flying) sphinx moth that mimics bumblebees and hovers while feeding, giving it a “hummingbird moth” appearance. Adults have partially transparent wings due to scale loss after emergence.

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Lepidoptera
Family
Sphingidae
Genus
Hemaris
Species
diffinis

Distinguishing Features

  • Clear (transparent) wing areas with dark borders typical of Hemaris clearwings
  • Robust, fast, hovering flight while nectaring (often mistaken for a bee or hummingbird)
  • Sphinx moth body shape (streamlined abdomen) and long proboscis for tubular flowers
  • Often associated with larval feeding on honeysuckles and related shrubs (varies regionally)

Did You Know?

Adult wingspan is typically about 38-51 mm as reported in North American hawk-moth references (e.g., Tuttle, 2007).

Newly emerged adults have scaled wings, but the scales are shed from the centers soon after, leaving the trademark transparent "clearwing" panels.

It flies in full daylight and often fools people into thinking it's a small hummingbird or a big bee-hence the common "hummingbird moth" nickname used for Hemaris species.

Larvae feed on honeysuckle-family plants (Caprifoliaceae), especially snowberry (Symphoricarpos) and honeysuckles (Lonicera), which is why it's called the Snowberry Clearwing (Wagner, 2005).

Depending on latitude, it can have 1 brood (north) or 2 broods (south/warmer regions) per year-typical for this species' reported phenology in field guides.

It is a true hawk moth (Family Sphingidae): a strong flier with a streamlined body and rapid wingbeats, but unusually diurnal compared with many sphingids.

Unique Adaptations

  • Clearwing "window" panels: scale loss creates transparent wing centers with dark margins, breaking up the outline and reinforcing the bee-like look.
  • Protective mimicry (Batesian-like): coloration, fuzz, and buzzing flight resemble stinging Hymenoptera, discouraging predators.
  • Power-muscle flight: like other sphingids, it has strong thoracic flight musculature enabling fast, agile hovering and rapid acceleration.
  • Day-flying shift: being active in sunlight reduces competition with many nocturnal hawk moths and aligns it with day-blooming nectar sources.
  • Life-cycle flexibility: ability to produce 1-2 generations per year (depending on climate) helps it exploit long growing seasons; overwintering occurs in the pupal stage in much of its range (reported generally for Hemaris in regional life histories).

Interesting Behaviors

  • Diurnal nectar foraging: adults visit flowers in bright sun (common targets include phlox, bee balm, lilac, and other tubular blooms) and feed while hovering rather than landing.
  • Sustained hovering: it holds position in front of a flower and extends its proboscis to drink nectar, often moving flower-to-flower in a quick circuit.
  • Bumblebee mimicry in motion: it pairs fuzzy body patterning with a loud flight buzz and darting movements that resemble foraging bees.
  • Route patrols/territorial flights: adults may repeatedly cruise along the same garden edge or woodland opening, checking patches of flowers.
  • Seasonal timing: adults are most often encountered from late spring into late summer (often May-September overall, varying by region and brood).
  • Larval feeding strategy: caterpillars feed on host leaves and later leave the plant to pupate in sheltered ground litter, a common sphingid pattern.

Cultural Significance

Snowberry Clearwing (Hemaris diffinis) is a well-known hummingbird moth in North American gardens. It helps teach pollination, mimicry, and metamorphosis (larva-pupa-adult). Gardeners watch it as a daytime pollinator and plant snowberry and nectar flowers to help sphingid diversity.

Myths & Legends

The name Sphinx moth and family Sphingidae comes from caterpillars' defense pose — they lift their front body like the Sphinx from Greek and Egyptian myths, an old link in species naming.

Across North America, clearwing sphinx moths (Hemaris spp., including Hemaris diffinis) are often called "hummingbird moths" because they hover like hummingbirds and visit flowers during the day.

The Snowberry Clearwing (Hemaris diffinis) got its name from the snowberry shrub it visits. People long named insects after plants and places, a practical, place-and-plant rooted naming tradition.

Conservation Status

NE Not Evaluated

Has not yet been evaluated against the criteria.

Population Unknown

Life Cycle

Birth 60 caterpillars
Lifespan 10 years

Lifespan

In the Wild
2–11 years
In Captivity
2–11 years

Reproduction

Mating System Promiscuity
Social Structure Solitary
Breeding Pattern Transient
Fertilization Internal Fertilization
Birth Type Internal_fertilization

Adults are solitary; males locate females via pheromones and mate by brief copulation with no pair bond, after which females oviposit singly on host plants and provide no care. Multiple mating is likely in both sexes (e.g., Tuttle 2007; Covell 2005).

Behavior & Ecology

Social Temporary nectar aggregation Group: 1
Activity Diurnal, Crepuscular
Diet Nectarivore Honeysuckle (Lonicera spp.) nectar
Seasonal Hibernates

Temperament

Non-territorial nectar forager; typically ignores conspecifics except during mating.
Startle-avoidant and predator-evasive; relies on bumblebee mimicry rather than aggression.
Brief competitive displacement at flowers can occur when nectar is limited; no stable dominance.
Adult longevity is short (about 1-2 weeks typical for sphinx moth adults); overwintering occurs as a pupa (reported for the snowberry clearwing in regional life-history accounts; e.g., Tuttle 2007; Covell 2005).

Communication

None documented; adults do not produce species-specific audible calls Sphinx moths are generally silent
Long-range sex pheromones: females broadcast; males track plumes with antennal chemoreception Common in clearwing moths
Close-range contact chemoreception via tarsi/proboscis during courtship and oviposition site assessment.
Visual signaling is indirect: bumblebee-like coloration and hovering flight reduce predation risk, shaping spacing behavior around flowers.
Flight timing cues Sunlight/temperature) synchronize local activity, producing incidental co-occurrence at nectar patches (variation with weather and floral density

Habitat

Deciduous Forest Coniferous Forest Woodland Grassland Shrubland River/Stream Wetland Mountain Alpine Meadow Suburban Urban Agricultural/Farmland +6
Biomes:
Temperate Forest Boreal Forest (Taiga) Temperate Grassland Alpine Wetland
Terrain:
Plains Hilly Valley Mountainous Riverine
Elevation: Up to 9842 ft 6 in

Ecological Role

Pollinating nectar-feeder (adult) and specialist-to-moderate generalist folivore on shrub hosts (larva)

Pollination of wildflowers and garden ornamentals via frequent nectar foraging and pollen transfer during hovering visits Trophic support: serves as prey for insectivorous birds, bats (when active at dawn/dusk), and predatory arthropods; larvae support parasitoid wasps/flies Herbivory on host shrubs contributes to plant-insect interactions and energy flow in temperate ecosystems

Diet Details

Other Foods:
Floral nectar Honeysuckle family

Human Interaction

Domestication Status

Wild

Hemaris diffinis (snowberry clearwing) is a wild native North American moth and has no domesticated or selectively bred lineage; human interaction is primarily through observation (often in gardens as a nectar-feeding "hummingbird moth") and occasional captive rearing for education.

Danger Level

Low
  • No sting or venom; cannot bite in a medically meaningful way.
  • Primary risk is misidentification as a bee/wasp due to mimicry, which can prompt defensive reactions by people.
  • Minor irritation is possible in sensitive individuals from handling (loose wing scales/dust), similar to other moths; medically significant reactions are uncommon.
  • If collected/handled outdoors, incidental risk comes from the environment (stings from actual bees/wasps at flowers, ticks, etc.), not from the moth itself.

As a Pet

Not Suitable as Pet

Legality: Snowberry Clearwing (Hemaris diffinis) is usually not regulated as a pet in the U.S. and Canada, but collecting on protected lands can be banned and transport or raising may need local permits—check local rules.

Care Level: Experienced

Purchase Cost: Up to $50
Lifetime Cost: $20 - $200

Economic Value

Uses:
Pollination ecosystem services (gardens and native habitats) Environmental education and outreach ("hummingbird moth" demonstrations) Nature tourism/photography (garden wildlife interest) Citizen science and biodiversity monitoring
Products:
  • No standard commercial products. Indirect value via pollination of ornamental and native flowering plants; occasional use as an educational rearing/display organism (non-commercial).

Relationships

Related Species 6

Hummingbird Clearwing
Hummingbird Clearwing Hemaris thysbe Shared Genus
Slender Clearwing Hemaris gracilis Shared Genus
Thetis clearwing Hemaris thetis Shared Genus
Ruby-throated Hummingbird Clearwing Hemaris rubra Shared Genus
Nessus sphinx Amphion floridensis Shared Family
Snowberry Sphinx Sphinx vashti Shared Family

Ecological Equivalents 5

Animals that fill a similar ecological role in their ecosystem

Hummingbird Hawk-moth
Hummingbird Hawk-moth Macroglossum stellatarum Strong niche convergence: a diurnal, hovering, nectar-feeding sphingid that functions as a hummingbird analogue at flowers, often hovering in front of tubular blooms. Like Hemaris diffinis, it is frequently cited in pollination and flight literature for sustained hovering and rapid maneuvering.
White-lined Sphinx Hyles lineata Shares the sphingid pollinator role—powerful flight, long proboscis, and frequent flower visitation. Adults are often crepuscular but can be active by day in large numbers, overlapping with H. diffinis at nectar sources.
Broad-bordered Bee Hawk-moth Hemaris fuciformis Ecological analogue outside North America: a day-flying Hemaris that mimics bumblebees and hovers while feeding; similar transparent-wing appearance caused by post-eclosion scale loss on the wing centers (a hallmark noted for Hemaris spp. in field guides).
Bumblebees Bombus impatiens Primary mimic model: H. diffinis's diurnal activity, fuzzy body, and buzzing flight are classic Batesian and automimicry cues that reduce predation by visually hunting predators conditioned to avoid stinging bees.
Clearwing moths Synanthedon viburni Share bee/wasp mimicry and diurnal (day-flying) behavior; however, many species have larvae that bore in stems or wood rather than functioning as hover-feeding pollinators. Included as ecological look-alikes and commonly confused with 'hummingbird moths' by observers.

The Snowberry Clearwing Moth looks so much like a bumblebee that some animals mistake it for the buzzing pollinator.

Is it a bumblebee? Is it a hummingbird? If you aren’t sure, it might just be a Snowberry Clearwing moth. These moths mimic bumblebees and even love to “buzz” around the same flowers and plants. They play an important role in the ecosystem as pollinators.

Species, Types, and Scientific Name

The scientific name of Snowberry Clearwing moths is Hemaris diffinis. It is a member of the Sphingidae family. These types of moths are also called sphinx moths or hawk moths. Snowberry Clearwing moths can also be known by different names sometimes. For example, a Hummingbird moth and a Flying Lobster both refer to the Snowberry Clearwing. It’s important not to confuse that with the Hummingbird-Hawk moth, which is a different species of sphinx moth.

Snowberry Clearwings belong to the Lepidoptera order, which includes all butterflies and moths. While they share many similarities, butterflies and moths are different in a few important features. Butterflies are usually brighter than moths, which tend to be grey or brown. Moths extend their wings over their bodies while at rest. Butterflies fold theirs up behind them.

The Snowberry Clearwing moths are also part of the Insecta class, Arthropoda phylum, and Animalia kingdom. Studying where these moths fit into the animal kingdom helps scientists understand more about them and their role in plant and animal conservation.

Appearance: How To Identify Snowberry Clearwing Moths

The Snowberry Clearwing has a couple of easy-to-identify features and one is right in its name. Their wings are see-through. Their wings do not have scales, which makes them clear. The outer scales on their wings are black. This acts as a kind of visual frame for their wing shape. When they first emerge from their cocoons, they do have scales but they fall off quickly as they move around.

These moths also have black and yellow fuzzy bodies, similar to bees. The main portion is a fuzzy dark yellow. The back portion of the abdomen is made up of bands of black and yellow. They are easy to mistake for bees until you notice the clearwings behind their body.

They are around 2 inches long. This larger size makes it easy to see their bee-like markings and coloring. The fuzzy appearance also adds to their bulk. Actual fine hairs make them fuzzy, rather than feathers. This is a similarity that they share with bumblebees rather than hummingbirds.

snowberry clearwing moth

The Snowberry Clearwing Moth has see-through wings and fuzzy black and yellow bodies.

Hummingbirds are usually 3-4 inches. Compared to the Snowberry Clearwing, which is just 2 inches long, Hummingbirds are much larger. This is one of the easiest ways to tell if you are looking at a moth or a hummingbird. Like Hummingbirds, these moths fan out their tail while they hover in the air, drinking nectar.

As larvae, Snowberry Clearwing moths are green. This is common among both moths and butterflies. The green coloring helps them blend into the plants that they need to eat in order to mature and eventually become adult moths. The larvae have a horned end to their tail like many other species of sphinx moths.

Habitat: Where to Find Snowberry Clearwing Moths

Snowberry Clearwing moths live in North America. They are common in many climates, from the colder Canadian provinces to tropical Florida. They can be found in British Columbia, California, the Midwest, and most parts of the Eastern United States from Maine all the way to Florida.

These moths like areas that have plenty of food for them to eat. These included wooded forests as well as urban gardens and residential landscapes. As long as they can eat, they are pretty happy. Due to their large habitat distribution, it is clear that they can live off of a variety of types of flowers.

As larvae, these animals live on the forest floor near their food sources. They even pupate in a cocoon on the ground. When they become adults, they can fly from flower to flower to eat. They are most active during the spring and summer and are seen frequently between March and September.

Diet: What Do Snowberry Clearwing Moths Eat?

These moths usually eat during the daytime and can be seen flying from flower to flower. This behavior is another reason that it is easy to mistake them for bumblebees since bees also go from flower to flower. They are also active at night and dusk, leading to many people thinking that they are looking at hummingbirds when they are actually spotting a Snowberry Clearwing moth.

They get the Snowberry part of their name from the food preference of the larvae form. As larvae, these animals like to eat snowberry, a small bush with white berries that is in the same family as the Honeysuckle. They also like buckbrush, horse gentian, blue star, and a variety of others.

Adult Snowberry Clearwing moths are not very picky about the type of flower that they get nectar from, as long as they can reach it. They have long straws called a proboscis to get into deep flowers. But they can find nectar from flowers in most regions. While eating, they hover in front of the flower similar to bees or hummingbirds.

Prevention: How to Get Rid of Snowberry Clearwing Moths

These moths are beneficial to plants and the environment. It’s best to leave them alone and let them drink nectar from your flowers. They pollinate while they move from flower to flower, holding pollen on their fuzzy bodies just like bees.

Instead of preventing Snowberry Clearwing moths, it’s best to try to attract them to your garden. This is especially true if you want to grow things like flowers, vegetables, and fruit. To make your outdoor area more enticing for Snowberry Clearwing moths, plant brightly colored flowers to attract them. Make sure that they can reach the nectar inside and that the flowers are not too deep.

Their bumblebee-like appearance actually helps scare off potential predators. Moths are tasty treats for many animals. This moth uses its natural camouflage to make other animals think that it is more dangerous than it actually is. These moths do not have stingers, just the coloring of bees. This helps them avoid becoming someone’s lunch.

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Sources

  1. Missouri Dept. of Conservation / Accessed July 29, 2022
  2. Birds and Blooms / Accessed July 29, 2022
  3. Chesapeake Bay Program / Accessed July 29, 2022
Katie Melynn Wood

About the Author

Katie Melynn Wood

Katie is a freelance writer and teaching artist specializing in home, lifestyle, and family topics. Her work has appeared in At Ease Magazine, PEOPLE, and The Spruce, among others. When she is not writing, Katie teaches creative writing with the Apex Arts Magnet Program in Anne Arundel County, Maryland. You can follow Katie @katiemelynnwriter.
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Snowberry Clearwing Moth FAQs (Frequently Asked Questions)

No, these moths are not dangerous. They are actually quite beneficial for gardeners.