description Bombus bellicosus Overview
Bombus bellicosus is a species of eusocial bumblebee native to the temperate grasslands and Pampas regions of South America. Its geographical distribution spans across parts of Brazil, Uruguay, Paraguay, and Argentina, where it plays an important role as a pollinator for native flora. The species builds ground nests and exhibits the complex colonial social structures typical of bumblebees. Entomologists have observed population declines in recent years, prompting scientific concern regarding its ecological status in its native habitats.
help Bombus bellicosus FAQ
Where is Bombus bellicosus found?
Bombus bellicosus is a South American bumblebee recorded mainly in southern Brazil, Uruguay, and Argentina. Its range is associated with temperate grasslands and Pampas-type landscapes rather than North American or European habitats. [IUCN species profile](https://s3.amazonaws.com/iucnredlist-newcms/staging/amazing-species/bombus-bellicosus/pdfs/original/bombus-bellicosus.pdf?1466625227=)
What kind of nest does Bombus bellicosus make?
It is eusocial, so a queen establishes a nest that later contains workers and reproductive individuals. Studies describe nests in soil cavities or surface ground sites covered with plant debris, and females have been reported to add a waxy insulating layer over the nest.
Why is Bombus bellicosus important to grassland ecosystems?
It is a native pollinator of South American grassland plants and crops, carrying pollen between flowers while collecting nectar and pollen for its colony. Its decline in parts of southern Brazil has been linked to the conversion of native grassland and other landscape changes.
Is Bombus bellicosus the same as Bombus pauloensis?
No. Bombus pauloensis is a separate South American bumblebee species that can occur in some of the same areas, including Uruguay. Reliable identification may require examination of body markings and locality because the two can be confused in field photographs.
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