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Macropis nuda is a ground nesting, univoltine bee native to northern parts of North America. Thus, this species cocoons as pupae and hibernates over the winter. The species is unusual as it is an oligolectic bee, foraging exclusively for floral oils and pollen from Primulaceae of the species Lysimachia ciliata.
It is believed that because solitary bees have very large, lipid-rich eggs the pollen provides the lipids and amino acids required for making these eggs. Pollen consumption is larger in younger females, and primarily occurs in the afternoon and evening as pollen collected early in the day goes toward larval provisioning.
Bumblebees generally visit flowers that exhibit the bee pollination syndrome and these patches of flowers may be up to 1–2 km from their colony. [62] They tend to visit the same patches of flowers every day, as long as they continue to find nectar and pollen there, [63] a habit known as pollinator or flower constancy. While foraging ...
Bees play an important role in pollinating flowering plants, and are the major type of pollinator in many ecosystems that contain flowering plants. It is estimated that one third of the human food supply depends on pollination by insects, birds and bats, most of which is accomplished by bees, whether wild or domesticated.
Andrena prunorum, otherwise known as the purple miner bee, is a species of solitary bees in the family Andrenidae. [1] It is commonly found in the continental United States as well as much of North and Central America. [2] [3] Andrena prunorum is a spring-flying, ground-nesting bee that serves as a ubiquitous generalist in ecological settings ...
In other cases, generalist bees are just as, if not more, effective; pollination effectiveness may have less to do with female pollen provisioning and more to do with male mating competition. [9] In some cases, generalist Bombus species are more effective pollinators of Malvaceae flowers than the specialist P. bombiformis .
Males can often be seen in large numbers flying around shrubs with large flowers, such as Rose of Sharon. Agapostemon angelicus is native to the Texas high plains. They specialized in being pollinators for cotton. [3] They can serve as a replacement for honey bees in pollination. [4]
O. lignara bees, like many insects, can select the gender of the egg they lay by fertilizing the egg, or not. Unfertilized eggs are males, while fertilized eggs are females. The adult bee lays female eggs in the back of the burrow, and the male eggs towards the front. On average, she lays about three males and one to two females per cavity.