Posts Tagged: Halictus ligatus
You often see a single solitary bee on a sunflower.
Perhaps it's a sunflower bee (Svastra) or a honey bee (Apis mellifera).
But four on one? Sharing a sunflower?
If you look closely at the photo below, you'll see Svasta, Apis and a sweat bee, Halictus ligatus on the sunflower head, plus another sweat bee, Halictus triparitus, "coming in for a landing," says native pollinator specialist Robbin Thorp, emeritus professor of entomology at the University of California, Davis.
If you're curious about the sunflower bee, "Our Svastra obliqua expurgata is a native bee and exhibits a preference for sunflowers which are also native and other relatives of sunflower," Thorp said. "The genus Svastra has over 20, all occurring in North and South America. All are ground nesting solitary bees. Some other species of Svastra exhibit preferences for pollen from evening-primrose or cactus.'
The garden is open from dawn to dusk, with free admission. You can do self-guided tours. Soon, probably next spring, the UC Davis Department of Entomology will offer guided tours.
Bee friendly garden? Indeed. In fact, Thorp has found 75 different species of bees--and counting--since he began monitoring the plot in October 2009, a year before it was planted.
If you wander through the garden, be sure to bring your camera, especially if you love insects and flowers.
You may find five species of bees sharing a sunflower!
This photo shows a honey bee (bottom left), a sunflower bee, Svastra, (center) and a sweat bee, Halictus ligatus, with another sweat bee, Halictus tripartus, coming in for a landing. (Photo by Kathy Keatley Garvey)
If you're in the right spot at the same time, you may get a double bonus: a non-native bee and a native bee on a native plant.
We took this photo in Healdsburg last week of a non-native bee (the common European or Western honey bee, Apis mellifera) and a native sweat bee (Halictus ligatus) sharing a plant native to the Americas: the sunflower.
A golden moment.
Two on a Sunflower
Seems like many folks assume that all bees are "honey bees."
If you look around you, you'll see bees of all shapes, colors and sizes nectaring flowers.
And they're not all honey bees (Apis mellifera)!
The one below, as identified by native pollinator specialist Robbin Thorp, emeritus professor of entomology at UC Davis, is a medium-sized striped sweat bee, Halictus ligatus. It's a ground-nesting bee. It's also a native bee (unlike honey bees which arrived here from Europe in 1622 with the colonists).
This particular sweat bee took an avid interest in the Agapanthus in our yard.
The Xerces Society has compiled a wealth of information on native bees. You'll want to check out their Web site and read about the $458,000 grant the society recently received to study native pollinators and protect their habitat.