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Posts Tagged: CDFA

Behold: A Mexican Cactus Fly on a Mexican Sunflower

It's not often you see a Mexican cactus fly, Copestylum mexicanum, nectaring on a Mexican...


"Aah, nectar!" A Mexican cactus fly, Copestylum mexicanum, on a Mexican sunflower, Tithonia rotundifolia, in Vacaville. (Photo by Kathy Keatley Garvey)

"Aah, nectar!" A Mexican cactus fly, Copestylum mexicanum, on a Mexican sunflower, Tithonia rotundifolia, in Vacaville. (Photo by Kathy Keatley Garvey)


"Here's looking at you!" A Mexican cactus fly, Copestylum mexicanum, sips nectar from a Mexican sunflower, Tithonia rotundifolia, in Vacaville. (Photo by Kathy Keatley Garvey)

"Here's looking at you!" A Mexican cactus fly, Copestylum mexicanum, sips nectar from a Mexican sunflower, Tithonia rotundifolia, in Vacaville. (Photo by Kathy Keatley Garvey)


"My territory!" says a dive-bombing male longhorned bee, a Melissodes agilis, as it targets the Mexican cactus fly. (Photo by Kathy Keatley Garvey)

"My territory!" says a dive-bombing male longhorned bee, a Melissodes agilis, as it targets the Mexican cactus fly. (Photo by Kathy Keatley Garvey)


"Coming at ya!" A Mexican cactus fly sails over a Mexican sunflower. (Photo by Kathy Keatley Garvey

"Coming at ya!" A Mexican cactus fly sails over a Mexican sunflower. (Photo by Kathy Keatley Garvey)

The wings of the Mexican cactus flower glisten in the morning sun. (Photo by Kathy Keatley Garvey)
The wings of the Mexican cactus flower glisten in the morning sun. (Photo by Kathy Keatley Garvey)

The wings of the Mexican cactus flower glisten in the morning sun. (Photo by Kathy Keatley Garvey)

Posted on Wednesday, July 29, 2020 at 4:37 PM
Focus Area Tags: Environment, Yard & Garden

Martin Hauser: 'The Curious Case of the Stingless Bees of Palo Alto'

Martin Hauser of the California Department of Food and Agriculture will speak on stingless bees of Palo Alto at the Pacific Coast Entomological Society meeting on Feb. 27. Here he introduces Madagascar hissing cockroaches to Bohart Museum of Entomology guests on Feb. 15 during the UC Davis Biodiversity Museum Day. (Photo by Kathy Keatley Garvey)

The title is intriguing: "The Curious Case of the Stingless Bees of Palo Alto." Isn't it illegal to import stingless bees in the United States? It...

Martin Hauser of the California Department of Food and Agriculture will speak on stingless bees of Palo Alto at the Pacific Coast Entomological Society meeting on Feb. 27. Here he introduces Madagascar hissing cockroaches to Bohart Museum of Entomology guests on Feb. 15 during the UC Davis Biodiversity Museum Day. (Photo by Kathy Keatley Garvey)
Martin Hauser of the California Department of Food and Agriculture will speak on stingless bees of Palo Alto at the Pacific Coast Entomological Society meeting on Feb. 27. Here he introduces Madagascar hissing cockroaches to Bohart Museum of Entomology guests on Feb. 15 during the UC Davis Biodiversity Museum Day. (Photo by Kathy Keatley Garvey)

Martin Hauser of the California Department of Food and Agriculture will speak on stingless bees of Palo Alto at the Pacific Coast Entomological Society meeting on Feb. 27. Here he introduces Madagascar hissing cockroaches to Bohart Museum of Entomology guests on Feb. 15 during the UC Davis Biodiversity Museum Day. (Photo by Kathy Keatley Garvey)

Plebeia sp (Images by Martin Hauser, California Department of Food and Agriculture)
Plebeia sp (Images by Martin Hauser, California Department of Food and Agriculture)

Plebeia sp (Images by Martin Hauser, California Department of Food and Agriculture)

Posted on Thursday, February 20, 2020 at 4:30 PM
Focus Area Tags: Agriculture, Economic Development, Environment

Andrew Young: Natural History of Syrphids, from Pollinators to Parasitoids

A syrphid, also known as a hover fly or flower fly, nectars on a tower of jewels, Echium wildpretii, in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

At first glance, they're often mistaken for bees, but bees they are not. They're flies. You've probably seen them hovering over flowers, which is...

A syrphid, also known as a hover fly or flower fly, nectars on a tower of jewels, Echium wildpretii, in Vacaville, Calif. (Photo by Kathy Keatley Garvey)
A syrphid, also known as a hover fly or flower fly, nectars on a tower of jewels, Echium wildpretii, in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

A syrphid, also known as a hover fly or flower fly, nectars on a tower of jewels, Echium wildpretii, in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

A syrphid in flight, heading toward a tropical milkweed, Asclepias curassavica. (Photo by Kathy Keatley Garvey)
A syrphid in flight, heading toward a tropical milkweed, Asclepias curassavica. (Photo by Kathy Keatley Garvey)

A syrphid in flight, heading toward a tropical milkweed, Asclepias curassavica. (Photo by Kathy Keatley Garvey)

A syrphid tucked inside the petals of a rock purslane, Calandrinia grandiflora. (Photo by Kathy Keatley Garvey)
A syrphid tucked inside the petals of a rock purslane, Calandrinia grandiflora. (Photo by Kathy Keatley Garvey)

A syrphid tucked inside the petals of a rock purslane, Calandrinia grandiflora. (Photo by Kathy Keatley Garvey)

A syrphid hovers over Jupiter's Beard, Centranthus ruber. (Photo by Kathy Keatley Garvey)
A syrphid hovers over Jupiter's Beard, Centranthus ruber. (Photo by Kathy Keatley Garvey)

A syrphid hovers over Jupiter's Beard, Centranthus ruber. (Photo by Kathy Keatley Garvey)

Posted on Monday, February 3, 2020 at 5:00 PM
Focus Area Tags: Agriculture, Economic Development, Environment, Innovation, Natural Resources, Pest Management, Yard & Garden

Find the Green Darner

Green darner dragonfly, Anax junius, in Benicia State  Historical Park. (Photo by Kathy Keatley Garvey)

Find the green darner. Trying to spot the green darner dragonfly, Anax junius--so named because of its resemblance to a darning needle--is like...

Green darner dragonfly, Anax junius, in Benicia State  Historical Park. (Photo by Kathy Keatley Garvey)
Green darner dragonfly, Anax junius, in Benicia State Historical Park. (Photo by Kathy Keatley Garvey)

Green darner dragonfly, Anax junius, in Benicia State Historical Park. (Photo by Kathy Keatley Garvey)

Posted on Wednesday, October 10, 2018 at 5:00 PM
Focus Area Tags: Environment, Natural Resources, Yard & Garden

The Lady Beetle and the Syrphid Fly

A large syrphid fly, Scaeva pyrastri (as identified by Martin Hauser of the California Department of Food and Agriculture), heads for a lady beetle. (Photo by Kathy Keatley Garvey)

So, here I am, an Asian lady beetle (Harmonia axyridis) perched on a rose bush in Vacaville, Calif., as dawn breaks. I'm eating  aphids and...

A large syrphid fly, Scaeva pyrastri (as identified by Martin Hauser of the California Department of Food and Agriculture), heads for a lady beetle. (Photo by Kathy Keatley Garvey)
A large syrphid fly, Scaeva pyrastri (as identified by Martin Hauser of the California Department of Food and Agriculture), heads for a lady beetle. (Photo by Kathy Keatley Garvey)

A large syrphid fly, Scaeva pyrastri (as identified by Martin Hauser of the California Department of Food and Agriculture, heads for a lady beetle. (Photo by Kathy Keatley Garvey)

Touchdown! The large syrphid fly, Scaeva pyrastri, lands next to the lady beetle.(Photo by Kathy Keatley Garvey)
Touchdown! The large syrphid fly, Scaeva pyrastri, lands next to the lady beetle.(Photo by Kathy Keatley Garvey)

Touchdown! The large syrphid fly, Scaeva pyrastri, lands next to the lady beetle.(Photo by Kathy Keatley Garvey)

The syrphid fly licks honeydew from the lady beetle. (Photo by Kathy Keatley Garvey)
The syrphid fly licks honeydew from the lady beetle. (Photo by Kathy Keatley Garvey)

The syrphid fly licks honeydew from the lady beetle. (Photo by Kathy Keatley Garvey)

Honeydew is a sugar-rich sticky liquid, secreted by aphids and some scale insects as they feed on plant sap. When their mouthpart penetrates the phloem, the sugary, high-pressure liquid is forced out of the anus of the aphid.
Honeydew is a sugar-rich sticky liquid, secreted by aphids and some scale insects as they feed on plant sap. When their mouthpart penetrates the phloem, the sugary, high-pressure liquid is forced out of the anus of the aphid.

"Let's try this again! I'm coming in. Wait, turn around, will ya!" Syrphid fly caught in flight. (Photo by Kathy Keatley Garvey)

Posted on Tuesday, June 6, 2017 at 4:38 PM

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