Brief Summary

Read full entry
Species in the genera Diadasia and Svastra are collectively called sunflower bees because, along with several other groups of plants, they are sunflower (Helianthus annuus) specialists. In addition to sunflowers, these bees specialize on mallows (Malvaceae), cacti (Cactaceae), evening primroses and willow herbs (Onagraceae), and wild bindweeds (Convolvulaceae). In fact, several cacti and mallows rely on sunflower bees for pollination services.

These bees are found in the New World and most occur in the United States and Central America, although several species do occur in Canada. Svastra spp. are moderate to large sized bees, usually between 7.5 and 20 mm long. They are hairy with pale hair bands on their abdomen. Males have long antennae.


Public Domain

National Biological Information Infrastructure (NBII) at

Supplier: Bob Corrigan

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!