Short answer
- There is no single kind of bee. The main groups most readers meet are honey bees, bumble bees, carpenter bees, mason bees, leafcutter bees, mining bees, sweat bees, and stingless bees. Honey bees live in large, lasting colonies, and stingless bees live in lasting colonies that vary greatly in size. Bumble bees live in smaller colonies that last for one season. Most mason bees, leafcutter bees, mining bees, sweat bees, and carpenter bees are solitary: each female builds and provisions her own nest, even when many females nest close together. In the United States, honey bees are managed and not native, while the other groups listed here include many native species. To tell groups apart, combine three clues: social life, nest site, and where the bee carries pollen.
What Counts as a Kind of Bee
Kind is a loose word here. Scientists group bees into families, then genera, then species. Gardeners usually use common names such as mason bee or sweat bee, and each name can cover many species. Two bees that look alike can belong to different groups, and one group can contain bees of very different sizes and colors.
Washington State University notes that bees in North America are grouped into six families: Colletidae, Andrenidae, Halictidae, Melittidae, Megachilidae, and Apidae. Mason bees and leafcutter bees both belong to Megachilidae, which explains why they carry pollen in a similar place. Honey bees, bumble bees, carpenter bees, and stingless bees all belong to Apidae, even though their social lives differ greatly.
Native versus managed is a second distinction, always relative to a place. A native bee evolved in a region; a managed bee is kept, moved, or supplied by people. In the United States, the western honey bee is the best known managed, non-native bee, while most garden bumble bees, mason bees, leafcutter bees, mining bees, and sweat bees are native. Some orchard mason bees and leafcutter bees were introduced, however, so a familiar group can contain both.
The Groups at a Glance
This table sorts groups, not species. Use it to narrow a sighting, then check the group sections.
| Group | Social life | Usual nest | Pollen carried on | First look |
|---|---|---|---|---|
| Honey bee | Fully social | Hive or cavity | Hind legs | Slender, golden brown, banded |
| Bumble bee | Primitively social, one season | Cavity, often underground | Hind legs | Large, round, very fuzzy |
| Carpenter bee | Solitary or cooperative | Tunnel in wood | Hind legs | Large, shiny abdomen |
| Mason bee | Solitary | Cavity, sealed with mud | Underside of abdomen | Compact, metallic blue |
| Leafcutter bee | Solitary | Cavity, lined with leaf pieces | Underside of abdomen | Medium, broad head |
| Mining bee | Solitary, often aggregated | Burrow in soil | Hind legs, body hairs | Hairy, dark, early spring |
| Sweat bee | Mostly solitary | Burrow in soil | Hind legs | Small, dark or metallic green |
| Stingless bee | Fully social | Tree cavity, tropical | Hind legs | Small to medium, no stinger |
Color alone is unreliable, and size alone is unreliable, because both vary within groups. Combine body shape, hair, pollen location, nest site, and season.
Social Life: From Solitary Females to Lasting Colonies
In solitary bees, each female is her own queen, worker, and forager. She finds or builds a nest, collects nectar and pollen, lays an egg on a food provision, seals the cell, and repeats the process. She does not feed adult offspring, and she does not defend a large colony. Penn State Extension stresses that solitary females construct nests and collect food for their young on their own. Nesting aggregations do not change this: many females may nest in the same soil bank or bee hotel, but each still provisions only her own cells.
In primitively social bumble bees, the year starts with a single overwintered queen. She finds a cavity, lays eggs, and rears the first workers herself. Once workers emerge, they take over foraging and brood care. The colony grows through summer, then rears new queens and males, mates, and dies back. Only new queens overwinter.
In fully social honey bees and stingless bees, colonies persist across seasons with a queen, workers, and males in distinct roles. Honey bee colonies can contain tens of thousands of individuals, according to Penn State Extension. Stingless bee colonies vary from a few dozen workers in some species to many thousands in others. Between solitary and social life sit cooperative arrangements, such as carpenter bees sharing a nest entrance while tending largely separate brood.
Nesting: Ground, Wood, Cavities, and Hives
Most bees nest in soil, in wood or plant stems, or in a cavity that already exists. Only a few build large wax nests in a managed hive.
Ground nesting is most common. Penn State Extension notes that most bee species in Pennsylvania nest in the ground, including all mining and melittid bees and many sweat bees, cellophane bees, and masked bees. Mining bees dig burrows with branching cells. Sweat bees excavate soil nests. Ground nesters often prefer bare or lightly vegetated soil, sandy soil, or a sunny bank. A patch of bare earth can therefore be valuable habitat, and heavy tilling can remove nesting sites unnoticed.
Wood and cavity nesting covers a different set of skills. Carpenter bees chew tunnels in wood. Mason bees and leafcutter bees do not usually chew their own holes: they use preexisting cavities in wood, hollow stems, beetle tunnels, or artificial tubes, then divide the tunnel into cells. Mason bees seal cells with mud or clay. Leafcutter bees line cells with cut leaf pieces. The Forest Service explains that both groups carry pollen on their bellies rather than on their hind legs, but mason bees use clay while leafcutter bees use cut leaves.
Hive and cavity colony nesting belongs mainly to honey bees, bumble bees, and stingless bees. Managed honey bees live in hives, but wild colonies use tree cavities and other enclosed spaces. Bumble bees use cavities too, often underground in old rodent burrows, in dense grass, or in sheltered structures. Stingless bees nest in tree cavities in tropical regions, building containers from wax mixed with resin. Cuckoo bees break the usual rule: they do not build nests or collect pollen for their young, but lay eggs in host bee nests. Penn State Extension lists cuckoo genera such as Nomada, Triepeolus, Epeolus, Sphecodes, and Coelioxys.
Appearance: How to Tell Groups Apart Without Handling a Bee
Never handle a bee to identify it, and never disturb a nest for a closer look. These clues work from a safe distance and from photographs.
Start with shape. Honey bees are slender, golden brown, and banded. Bumble bees are robust and densely hairy. Carpenter bees are also large, but the upper abdomen is shiny and largely hairless, which separates them from bumble bees at a glance. Mason bees are compact and chunky. Leafcutter bees have a broad head, strong jaws, and pale abdominal bands. Mining bees are hairy and often dark. Sweat bees are often small, dark, or metallic green. Stingless bees are small to medium and lack a stinger, though some bite.
Next, check pollen carriage. Honey bees, bumble bees, carpenter bees, mining bees, and sweat bees generally carry pollen on the hind legs or body hairs. Mason bees and leafcutter bees carry pollen under the abdomen. The Forest Service uses this contrast directly: honey bees carry round balls of pollen on their hind legs, while mason bees and leafcutter bees carry pollen on their bellies.
Then check behavior and season. A large fuzzy bee in early spring on a cool morning is more likely a bumble bee queen than a honey bee worker. A bee cutting neat semicircles from a leaf is almost certainly a leafcutter bee. A bee entering a round hole in wood with sawdust nearby points to a carpenter bee. A small metallic green bee disappearing into a soil burrow points to a sweat bee. A bee entering a tube sealed with mud points to a mason bee. Hoverflies, by contrast, have only two wings, short antennae, and a hovering flight style, while bees have four wings and longer antennae.
Honey Bees
The western honey bee, Apis mellifera, dominates beekeeping, crop pollination discussion, and honey production in the United States. It is also not native to North America. Penn State Extension lists the honey bee among exotic species in Pennsylvania, alongside introduced mason bees, leafcutter bees, and wool carder bees. That fact does not make honey bees unimportant. It means a guide that treats honey bees as the default native bee gets the ecology backwards.
Honey bee colonies are perennial, highly organized, and large. A queen lays eggs, workers perform age related tasks from brood care to foraging, and drones mate with queens. Workers communicate food locations through dances, store honey and pollen, and regulate hive temperature. Managed colonies live in hives that beekeepers can inspect, move, and split. Wild colonies use cavities. Honey bees are generalist foragers, collecting nectar and pollen from a wide range of plants, which is one reason they are valuable for crops that bloom in large blocks.
Bumble Bees
Bumble bees, genus Bombus, are the large, fuzzy, round bees of gardens, meadows, and cool mornings. They are native to North America, social for one season, and recognizable by dense hair and a loud, low buzz. Penn State Extension records fourteen bumble bee species in Pennsylvania alone.
A bumble bee year has four parts. A mated queen overwinters alone, often underground or in a sheltered spot. In spring she emerges, feeds, finds a cavity, and rears her first brood herself. Workers then take over foraging and nest care, and the colony grows, in some species to up to several hundred workers, far smaller than a honey bee colony. In late summer the colony rears new queens and males. After mating, new queens seek overwintering sites, while the old colony dies. Bumble bees are strong pollinators because they are large and hairy, forage in cooler temperatures than honey bees, and perform buzz pollination on some flowers, vibrating their flight muscles to release pollen that other bees cannot easily reach. Color patterns vary by species, so color alone cannot name a species with confidence.
Carpenter Bees
Carpenter bees, genus Xylocopa for the large species and Ceratina for the small species, are most often mistaken for bumble bees, and most often noticed because of wood. Large carpenter bees are big, loud, and dark, with a shiny, largely hairless upper abdomen. Small carpenter bees are much smaller, dark, and often metallic, and they nest in pithy stems rather than solid wood. Both groups belong to Apidae, like honey bees and bumble bees, but their social life is very different.
Large carpenter bees chew tunnels in wood to make nest galleries. Penn State Extension notes that the eastern carpenter bee, Xylocopa virginica, nests in wood, along with small carpenter bees in Ceratina. A female chews an entrance hole, then excavates a tunnel along the grain, dividing it into cells with wood partitions. Males often hover near nest entrances and may dart at intruders, but male carpenter bees cannot sting. Females can sting but rarely do unless handled or trapped. Socially, carpenter bees sit in the middle ground: Penn State Extension describes them as solitary or cooperatively breeding, with females sharing a single nest entrance and a weak or brief social structure. A tunnel system may therefore be reused and extended across years, which is why damage can accumulate in untreated wood even though no large colony exists.
Mason Bees
Mason bees, genus Osmia, are the quiet orchard workers of spring. They are solitary, compact, and often dark metallic blue, though other species are dark with pale hair or resemble small bumble bees. They do not live in hives, do not make honey for harvest, and do not defend a colony. Each female provisions her own cells, yet females often nest side by side in the same bee hotel or log.
The name mason comes from building material. The Forest Service explains that mason bees use clay to make partitions and to seal entrances, while leafcutter bees use cut leaves. A female finds a preexisting hole, stocks the back cell with a pollen and nectar mass, lays an egg, builds a mud wall, and repeats the process toward the entrance. A finished tunnel may hold five to eight cells, according to the Forest Service account of the blue orchard bee. Cells farthest back usually become females, cells near the entrance usually become males, which helps males emerge first in spring. Adults develop by late summer, then wait until the next spring, when they emerge in time for fruit tree bloom. There are 140 species of Osmia in North America, according to the Forest Service, and blue orchard bees visit apples, plums, pears, almonds, and peaches. Penn State Extension lists three introduced Osmia species in Pennsylvania, so not every mason bee in a garden is native.
Leafcutter Bees
Leafcutter bees, genus Megachile, are the bees that sign their work on leaves. A neat semicircle cut from a rose, lilac, or bean leaf is often the first evidence of a leafcutter bee, even before the bee is seen. Like mason bees, they belong to Megachilidae and carry pollen under the abdomen. Unlike mason bees, they line and partition nest cells with leaf pieces, sometimes with resin in related groups.
Leafcutter bees are solitary and use preexisting cavities in wood, hollow stems, and other enclosed spaces. Penn State Extension notes that they nest in wood or preexisting cavities such as hollow twigs, stems, pine cones, and snail shells, depending on species. A female cuts leaf pieces with her jaws, carries them back, shapes them into a cell, provisions it with pollen and nectar, lays an egg, and seals it, repeating the process in a row. In gardens, leaf damage looks alarming but usually does not harm a healthy plant, because the bee removes only small pieces. One managed leafcutter bee deserves a clear note: the alfalfa leafcutting bee, Megachile rotundata, is used for alfalfa pollination and is listed by Penn State Extension among exotic species in Pennsylvania. It is useful, but it is not native.
Mining Bees
Mining bees, genus Andrena and related groups, are the early spring bees of lawns, banks, and woodland edges. They are solitary, hairy, and often dark with pale hairs, and they dig their own burrows in soil rather than using a ready made cavity. Penn State Extension places mining bees in Andrenidae, with 100 species in Pennsylvania alone. Many fly early, when few other bees are active, and many are pollen specialists, collecting pollen from a narrow set of plants.
A mining bee nest is a burrow with side branches ending in brood cells. The female excavates soil, provisions each cell with pollen and nectar, lays an egg, and seals the cell. She may nest alone or in a dense aggregation where hundreds of females dig in the same bank. An aggregation can look like a colony, but Penn State Extension is explicit: solitary bees that nest close together still care only for their own young, so an aggregation is not a social colony. Mining bees matter for early crops and wildflowers because they are active in cool temperatures when fruit trees, willows, and spring flowers bloom.
Sweat Bees
Sweat bees, family Halictidae, are the small bees most often overlooked, and the ones most likely to surprise a reader by landing on skin. They are called sweat bees because some species are attracted to human perspiration for its salt. They do not seek people to sting, and many are so small that a sting, if it happens, is usually minor. Most sweat bees are solitary, but the family includes social, communal, and solitary species, so a single social label is misleading.
Dark sweat bees in Halictus and related genera are small to medium, dark, and often banded. Metallic sweat bees in Agapostemon and Augochlora are bright green or blue green. Penn State Extension lists Halictidae as the second largest bee family in Pennsylvania, with 110 species. Nesting is mostly in soil, though some nest in decaying wood. A female digs a burrow, provisions cells, and lays eggs, much like a mining bee, but nests can be more complex, with shared entrances or overlapping generations in social species. Sweat bees are generalist pollinators, and their small size lets them visit small flowers that larger bees may ignore.
Stingless Bees
Stingless bees are the tropical counterpart to honey bees, and the group most readers outside the tropics will never meet in the wild. They belong to the tribe Meliponini within Apidae, and they live in tropical and subtropical regions. Portland State University describes them as truly social bees like honey bees, generally small to medium, with colonies from several dozen to several hundred individuals, while exceptional species reach colony sizes as great as honey bees. Penn State Extension material on stingless bees in Brazil adds that most species have a single queen, and colony size ranges from a few dozen workers to many thousands.
Stingless bees have lost the ability to sting. Queens and workers lack a functional stinger. That does not mean they are defenseless: some bite, some use resin to defend entrances, and some hide when a nest is opened. Their nests are usually in tree cavities, where they build brood and food containers from wax mixed with resin. They store honey and pollen in pots rather than in wax combs, and in many tropical regions they greatly outnumber other bee species combined, according to Portland State University. Local people in many tropical regions keep stingless bees for honey, a practice called meliponiculture.
Native Versus Managed: A Clearer Map
Native and largely unmanaged: most bumble bees, mining bees, sweat bees, and many mason bees and leafcutter bees in their home regions, living in wild and garden habitats without hives supplied by people.
Native and sometimes managed: blue orchard mason bees and some other native pollinators that growers supply with tubes or blocks. Management here means providing nest sites within their native range, not keeping them in hives.
Non-native and managed: western honey bees in North America, alfalfa leafcutting bees in many regions, and some introduced mason bees and wool carder bees. They can help crops and also compete with native bees, spread disease, or alter plant interactions, as Penn State Extension notes for exotic species in Pennsylvania. A bee native in one region may be non-native in another once moved, so name the place when calling a bee native and check a regional checklist.
Which Bee Is in Your Garden: A Short Decision Guide
First, ask where the bee is nesting. A hive box or dense stream into a cavity through winter points to honey bees. A cavity in summer with large fuzzy bees points to bumble bees. A round hole in wood with sawdust points to carpenter bees. A tube sealed with mud points to mason bees. A tube with leaf pieces points to leafcutter bees. A soil burrow in spring points to mining bees or sweat bees. A tropical tree cavity points to stingless bees.
Second, ask how the bee carries pollen. Pollen under the abdomen points to mason bees or leafcutter bees. Pollen on the hind legs points to the other groups here, so use size and nest clues to narrow further. Third, ask about body shape: very fuzzy and round points to bumble bees, large with a shiny abdomen points to carpenter bees, slender and banded points to honey bees, compact and metallic blue points to mason bees, and hairy and dark in early spring at a soil burrow points to mining bees. Fourth, ask about behavior: a lone large queen in spring points to bumble bees, a bee cutting leaves points to leafcutter bees, a bee hovering at a wood entrance points to a male carpenter bee, and a small bee on skin in summer for salt points to sweat bees. If clues conflict, record the group as uncertain.
Supporting Different Kinds of Bees Without Favoring Only Honey Bees
Plant a succession of flowers from early spring to late autumn, with native plants where possible, because different bees fly at different times and prefer different flower shapes. Include early willow and fruit trees, summer flowers, and late flowers for bumble bee colonies rearing new queens. Favor open, single flowers over double flowered varieties that hide nectar and pollen.
Leave nesting habitat in place: bare, sunny soil for mining bees and sweat bees, and dead wood, snags, and pithy stems where safe for carpenter bees, mason bees, and leafcutter bees. If you use a bee hotel, use clean tubes of the right diameter, shelter it from rain, and clean or replace tubes regularly to reduce disease.
Reduce pesticide risk by avoiding broad spectrum insecticides on flowering plants, by not spraying during bloom, and by checking extension guidance before treating a nest. Penn State Extension advises planting food sources year round, providing nesting habitat, and reducing pesticide use. That advice matters most for solitary bees, which cannot replace a lost female with workers from a colony.
Frequently Asked Questions
How many kinds of bees are there?
There is no single number for kind. Scientists recognize thousands of species in seven families, with six families commonly represented in North America. Pennsylvania alone has more than 400 species. The eight groups here cover most garden sightings.
Are all bees social and do all bees live in hives?
No. Most species are solitary. Honey bees and stingless bees live in lasting colonies, and bumble bees live in colonies for one season. Mason bees, leafcutter bees, mining bees, most sweat bees, and most carpenter bees do not live in hives. A bee hotel holds separate solitary nests, not a hive.
Which bees are native to the United States?
Many bumble bees, mining bees, sweat bees, carpenter bees, mason bees, and leafcutter bees are native, but status must be checked species by species and region by region. Honey bees are not native to North America. Some mason bees, leafcutter bees, and wool carder bees were introduced. Check a regional checklist for a local answer.
Which bees make honey that people harvest?
Honey bees are the main bees kept for harvestable honey at scale. Stingless bees also store honey in pots and are kept for honey in many tropical regions, but yields and management differ. Bumble bees store only small amounts for colony use. Solitary bees store provisions for their own larvae, not honey for harvest.
Do all bees sting?
No. Stingless bees lack a functional stinger, though some bite. Male bees cannot sting, because the stinger is a modified egg laying structure found only in females. Solitary females usually sting only if handled, squeezed, or trapped. Social bees are more likely to sting in defense of a colony.
What is the difference between mason bees and leafcutter bees?
Both belong to Megachilidae, both are solitary, both use preexisting cavities, and both carry pollen under the abdomen. The difference is nest material: mason bees use mud or clay, leafcutter bees use cut leaf pieces. Mud seals point to mason bees, leaf pieces point to leafcutter bees.
How can I tell a bee from a wasp or a hoverfly?
Bees are usually hairy, carry pollen for their young, and have four wings and longer antennae. Wasps are usually smoother, narrow waisted, and collect animal protein for their larvae rather than pollen. Hoverflies have only two wings, short antennae, and a distinctive hovering flight. Photograph the insect rather than handling it.
Should I remove a bee nest from my garden?
In most cases, no, unless the nest poses a genuine safety or structural problem. Solitary nests do not need removal. Bumble bee nests last one season and die back naturally. Honey bee colonies and carpenter bee tunnels in structural wood are the cases where professional advice is most useful. Get identification from a local extension service or beekeeper before acting.
Sources & references
- Washington State University, Hortsense. Bees: Introduction. Family grouping for bees in North America, including Colletidae, Andrenidae, Halictidae, Melittidae, Megachilidae, and Apidae, and notes on common garden bees. https://hortsense.cahnrs.wsu.edu/fact-sheet/bees-introduction/
- Penn State Extension. Bees in Pennsylvania: Diversity, Ecology, and Importance. Species counts by family, nesting patterns, solitary versus social life, bumble bee and carpenter bee social variation, cuckoo bees, pollen specialists and generalists, and exotic species list. https://extension.psu.edu/bees-in-pennsylvania-diversity-ecology-and-importance
- United States Department of Agriculture Forest Service. Blue Orchard Mason Bee (Osmia lignaria). Mason bee versus leafcutter bee pollen carriage and nest material, Osmia species count in North America, fruit tree visitation, solitary life, and nest cell structure. https://www.fs.usda.gov/wildflowers/pollinators/pollinator-of-the-month/mason_bees.shtml
- Portland State University, Urban Garden Ecology. Stingless Bees. Social life, colony size range, tropical distribution, loss of stinging ability, pollen basket, and abundance in tropical regions. https://gardenecology.pdx.edu/pollinators/stingless-bees/index.html
- Penn State Extension. Beekeeping Around the World: Stingless Bees in Brazil. Single queen pattern in most stingless bee species, colony size range, and nest defense by biting in some species. https://extension.psu.edu/beekeeping-around-the-world-stingless-bees-in-brazil-2
- University of Texas at Austin, Jha Lab. Native Bees. Six bee family summary, including Apidae, Megachilidae, Halictidae, Andrenidae, Colletidae, and Melittidae, with nesting and appearance notes. https://w3.biosci.utexas.edu/jha/outreach/native-bees
