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| Eucera | |
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| Eucera cinnamomea, male | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Apidae |
| Tribe: | Eucerini |
| Genus: | Eucera Scopoli, 1770 |
| Subgenera | |
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| Synonyms | |
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Eucera is a genus of bees in the family Apidae, which comprises more than 100 species. These bees are commonly known as long-horned bees due to their characteristically long antennae, especially in males. Eucera species can be found in diverse habitats, including meadows, fields, and urban gardens, primarily in the Palearctic and Nearctic regions, covering parts of Europe, Asia, North Africa, and North America.
Eucera bees play a crucial role in pollinating a wide range of flowering plants. They are solitary bees, meaning that each female builds and provisions her own nest without forming social colonies like honeybees. Female Eucera bees construct their nests in the ground, typically in well-drained, sandy soils. They lay their eggs within the nest and provide a food supply for their offspring by collecting pollen and nectar from flowers.
Eucera bees are active from spring to fall, and their flight period often coincides with the blooming period of their preferred flowering plants. They are generalist pollinators, meaning they visit a wide variety of flowers, but some species show preferences for specific plants or families, such as legumes or sunflowers.
