Posts Tagged: sunflower bee
As we near the end of celebrating National Pollinator Week, June 16-22, look around and see all the insects foraging on reddish-orange flowers. And occasionally, you might see a reddish-orange insect like the showy Gulf Fritillary butterfly.
Orange, a color commonly associated with autumn, Halloween and Thanksgiving, is also a color that brightens many of our seasons and draws attention to special occasions, including Pollinator Week.
The reddish-orange Gulf Fritillary (Agraulis vanillae) spreads its wings on a purple coneflower (Echinacea purpurea). A honey bee (Apis mellifera) and a sunflower bee (Melissodes agilis) forage on a blanket flower (Gallardia). Another bee, the leafcutting bee, Megachile fidelis, and a green bottle fly take a liking to a Mexican sunflower (Tithonia rotundifolia).
Pollinators come in all sizes, shapes, colors and species, from bees, birds, butterflies, bats and beetles, to flies.
Many folks throughout the country observe National Pollinator Week once a year, but some organizations, such as the Xerces Society for Invertebrate Conservation, protect our pollinators and promote pollinator conservation every day.
On their website:
"Pollinators are essential to our environment. The ecological service they provide is necessary for the reproduction of over 85 percent of the world's flowering plants, including more than two-thirds of the world's crop species. The United States alone grows more than one hundred crops that either need or benefit from pollinators, and the economic value of these native pollinators is estimated at $3 billion per year in the U.S. Beyond agriculture, pollinators are keystone species in most terrestrial ecosystems. Fruits and seeds derived from insect pollination are a major part of the diet of approximately 25 percent of all birds, and of mammals ranging from red-backed voles to grizzly bears. In many places, the essential service of pollination is at risk from habitat loss, pesticide use, and introduced disease."
Indeed, pollinators pack a punch.
Gulf Fritillary (Agraulis vanillae) spreads its wings on a purple coneflower (Echinacea purpurea). (Photo by Kathy Keatley Garvey)
A sunflower bee (Melissodes agilis) forages on a blanket flower (Gallardia). (Photo by Kathy Keatley Garvey)
A green bottle fly rests on a Mexican sunflower (Tithonia rotundifolia). (Photo by Kathy Keatley Garvey)
Honey bee (Apis mellifera) on a blanket flower (Gallardia). (Photo by Kathy Keatley Garvey)
A leafcutting bee, Megachile fidelis, on a Mexican sunflower (Tithonia rotundifolia). (Photo by Kathy Keatley Garvey)
What's better than a bee threading through a flowering artichoke? Two bees, a honey bee and a long-horned sunflower bee.
Flowering 'chokes are big draws for bees. Plant 'em, let 'em flower, and they will come. Sometimes in droves. Sometimes in diversity. Always amazing.
A male sunflower bee, Svastra obliqua expurgata, aka the long-horned sunflower bee, stopped foraging to look at us with his big green eyes.
An Italian honey bee, Apis mellifera, buzzing low and packing white pollen, ignored us.
From their missions they did not stray.
Honey bee packing white pollen. (Photo by Kathy Keatley Garvey)
A male long-horned sunflower bee, Svastra obliqua expurgata. (Photo by Kathy Keatley Garvey)
Makes sense that the sunflower bee (Svastra spp.) forages on the genus Cosmos.
Cosmos (also the common name) is a member of the sunflower family, Asteraceae.
Sunflower bee: sunflower family. A specialist bee.
On a recent trip to the Luther Burbank Home and Gardens in Santa Rosa, we spotted scores of sunflower bees on cosmos, each bee packing a heavy load of golden pollen.
There was a pollen party going on, pure and simple.
Although the sunflower bee, as a floral visitor, is often mistaken for a honey bee, there's no mistaking that this is a pollinator, too.
Sunflower bee (Svastra spp.) foraging on cosmos. (Photo by Kathy Keatley Garvey)
Close-up of pollen on a sunflower bee. (Photo by Kathy Keatley Garvey)
Will the real honey bee stand up?
Not all bees are honey bees and not all floral visitors that look like bees are bees. Sometimes they're flies.
A recent trip to the Häagen-Dazs Honey Bee Haven, a half-acre bee friendly garden located next to the Harry H. Laidlaw Jr. Honey Bee Research Facility on Bee Biology Road at the University of California, Davis yielded a variety of floral visitors.
They all took a'liking to the 8-foot-tall Mexican sunflower (Tithonia rotundifolia), as orange as a Halloween pumpkin.
The floral visitors?
One was a drone fly (Ristalis tenax).
One was a sunflower bee (Svastra obliqua expurgata).
And one was a honey bee (Apis mellifera).
Scores of editors have mistaken drone flies and sunflower bees for honey bees and published photos that make entomologists cringe.
Entomologist/insect photographer Alex Wild of the University of Illinois (he received his doctorate in entomology at UC Davis with major professor Phil Ward), wrote an eye-opening piece on his Scientific American blog about mistaken insect identities. You'll want to read this--and then take a look at his amazing Myrmecos site.
And if you want to learn about insect photography from a master, be sure to attend his seminar from 12:10 to 1 p.m., Wednesday, Oct. 26 in 122 Briggs Hall, UC Davis. His topic: "How to Take Better Insect Photographs."
And maybe he'll mention that Bees of the World book cover. The image is a fly.
Drone fly visiting the Mexican sunflower. (Photo by Kathy Keatley Garvey)
Sunflower bee packing a load of pollen. (Photo by Kathy Keatley Garvey)
Honey bee nectaring a Mexican sunflower. (Photo by Kathy Keatley Garvey)
Harry H. Laidlaw Jr. Honey Bee Research Facility on Bee Biology Road at the University of California, Davis, is more than just a haven for honey bees.
Think bumble bees, carpenter bees, leafcutter bees, sweat bees, sunflower bees and scores of other bees.
The grand opening celebration of the garden will take place from 10 a.m. to 2 p.m. on Saturday, Sept. 11, but the bees and other native pollinators are already out there.
And have been for some time.
Native pollinator specialist Robbin Thorp, emeritus professor of entomology at UC Davis, has been monitoring the garden for the past two years--from open field to planted garden.
He's found more than 50 different species of bees representing five families (Andrenidae, Apidae, Colletidae, Halictidae and Megachilidae).
They include the striped sweat bee Halictus ligatus from the family, Halictidae; the yellow-faced bumble bee, Bombus vosnesenskii from the family Apidae; the leafcutter bee, Megachile sp., from the family Megachilidae; and the sunflower bee, Svastra obliqua expurgata from the family Apidae.
How colorful they are. And how diverse.
Yellow-Faced Bumble Bee