Photo By maxson.erin , used under CC-BY-2.0 /Cropped and compressed from original
Alfalfa leafcutter bee
Megachile rotundata
A species of Leafcutter bees, Also known as Lucerne leafcutter bee, Alfalfa leafcutting bee
Megachile rotundata is a European leaf-cutting bee placed in the sub-genus Eutricharia, the "small leaf-cutting bees"; they are 6–9 mm (0.24–0.35 in) in length. They are partially bivoltine, meaning that under the right conditions they can produce two generations per year. These bees present a sexual dimorphism, in which the males are smaller than the females and differently marked. M. rotundata bees are a dark grey color. Females have white hairs all over their bodies, including on their scopae. In contrast, males have white and yellow spots on their abdomens.
Toxic to Humans
Human Stinging
General Info About Alfalfa leafcutter bee
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Attributes of Alfalfa leafcutter bee
Colors
Black
Yellow
White
Habitat
Megachile rotundata is currently found on all continents except for Antarctica. In North America, the species was deliberately imported to assist in the pollination of food crops, but has now become feral and widespread. In New Zealand and Australia, M. rotundata was also introduced to assist in the pollination of alfalfa (known locally as lucerne), in 1971 in New Zealand, and 1987 in Australia.
Adult Food Sources
Nectar, pollen
Larva Food Source
Pollen, nectar
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
The Alfalfa leafcutter bee has special defensive behaviors that can trigger an allergic reaction. If there are serious reactions, seek IMMEDIATE medical attention.
Venomous
The Alfalfa leafcutter bee can induce toxic reactions varying in severity. Nevertheless, these toxins primarily target their prey and predators and are usually not fatal to humans.
Phytophagous
The Alfalfa leafcutter bee feeds on plants, usually without causing significant harm. However, it's important to take the situation seriously if their numbers begin to increase significantly.
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Chewing-lapping mouthparts
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Species Status of Alfalfa leafcutter bee
Not threatened
Distribution Area of Alfalfa leafcutter bee
Europe, various regions around the world
Predators of Alfalfa leafcutter bee Larvae
Birds, reptiles, small mammals, other insects
Predators of Adult Alfalfa leafcutter bee
Birds, spiders, rodents, reptiles
Interesting Facts About Alfalfa leafcutter bee
Female alfalfa leafcutter bee utilize a unique leaf-cutting behavior to construct their nests, meticulously snipping circular pieces to fashion individual brood cells.
Scientific Classification of Alfalfa leafcutter bee
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Youth Habitat of Alfalfa leafcutter bee
Urban and Suburban Areas, Agricultural and Cultivated Areas, Grasslands and Prairies
Adult Habitat of Alfalfa leafcutter bee
Urban and Suburban Areas, Agricultural and Cultivated Areas, Forests and Woodlands, Grasslands and Prairies
When is the Best Time to Observe Alfalfa leafcutter bee
The best time to find adult alfalfa leafcutter bee would be during warmer months when flowers are blooming, as these insects are active pollinators. Early morning or late afternoon, when temperatures are cooler and they are less active, can also be suitable times.
What is the Best Weather to Observe Alfalfa leafcutter bee
Dry, warm weather is ideal for observing alfalfa leafcutter bee, as they are less active during cold or rainy conditions. Overcast days with mild temperature can also be suitable as alfalfa leafcutter bee may be slower and easier to observe.
How and Where Can You Find Alfalfa leafcutter bee at Different Life Stages
Larva Alfalfa leafcutter bee larvae develop inside the nests, which are usually concealed in cavities, such as hollow twigs or man-made structures. To find alfalfa leafcutter bee larvae, one should look for these nesting sites rather than the larvae themselves.
Pupal During the pupal stage, alfalfa leafcutter bee is undergoing metamorphosis inside the nest and is not visible. Finding alfalfa leafcutter bee pupae involves locating and opening their nests, which require knowledge of alfalfa leafcutter bee nesting habits and must be done with care to avoid disturbing them.
Adult Adult alfalfa leafcutter bee are most easily found when foraging on flowers. To find adult alfalfa leafcutter bee, one should visit flowering plants during the day, particularly those that are known to attract bees. Observing the flowers and checking for alfalfa leafcutter bee coming to collect pollen and nectar can yield good results. Maintaining a garden with a variety of blooming plants can also attract alfalfa leafcutter bee to the area.
Are Alfalfa leafcutter bee harmful?
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Are Alfalfa leafcutter bee harmful to humans?
In general, alfalfa leafcutter bee are not harmful to people, they are only interested in pollen and leaves. However, the alfalfa leafcutter bee like other bees, has a tail pin that can be used from the guard. In addition, alfalfa leafcutter bee has a developed and powerful jaw. So please don't mess with them, otherwise the alfalfa leafcutter bee may bite and sting you.
Harmful Effects of Alfalfa leafcutter bee
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Toxic to Humans
Human Stinging
Toxic to Humans
Alfalfa leafcutter bee possesses a stinger, but is not known for a toxic impact on humans. They may use the sting in defense but typically, the sting does not pose a significant risk besides mild pain and inflammation localized to the sting area. Long-term or severe effects are rare in the absence of allergy-related complications.
Does the Alfalfa leafcutter bee sting humans?
Alfalfa leafcutter bee females may possess a sting, but they rarely use it on humans as they are non-aggressive. Stinging typically occurs only when they feel threatened or are mishandled. There is no unique characteristic related to their stinging behavior, as it is a common defense mechanism among Hymenoptera. Unlike bees, alfalfa leafcutter bee does not die after stinging and can potentially sting multiple times without physical consequences to themselves.
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Pollinator
Pollinator
Prefer Plant Type
Asteraceae, Fabaceae
Attract Plant Feature
Color, Shape
Alfalfa leafcutter bee is a diligent pollinator, often seen visiting flowers of the Asteraceae family and legumes. It is attracted by the vibrant colors and distinct shapes of these blooms. This bee collects pollen primarily to provision its nests for its larvae, playing a crucial role in the ecosystem by transferring pollen between flowers.
Common Questions People Also Ask
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