Trinity County Cooperative Extension
University of California
Trinity County Cooperative Extension

Posts Tagged: CDFA

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 finding the proverbial needle in a haystack. But there it was, camouflaged in shrubbery on Sept. 23 in the...

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

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 minding my own beetle business, which consists of gobbling aphids and more aphids. And more aphids. Did I say...

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

Feuding, Bigamy and Tunneling: Hear About The Eccentric Life of Entomologist Harrison Dyar

Entomologist Marc E. Epstein researched, wrote and published

Former Smithsonian entomologist Harrison G. Dyar, noted for his research on moths and butterflies, was not your typical entomologist. He feuded with fellow entomologists, was a bigamist (married to two wives at the same time) and caused an uproar when a...

Entomologist Marc E. Epstein researched, wrote and published
Entomologist Marc E. Epstein researched, wrote and published "Moths, Myths and Mosquitoes: The Eccentric Life of Harrison G. Dyar, Jr."

Entomologist Marc E. Epstein researched, wrote and published "Moths, Myths and Mosquitoes: The Eccentric Life of Harrison G. Dyar, Jr."

Posted on Tuesday, April 19, 2016 at 10:53 AM

Blue as Blue Can Be

A male tule bluet on a fading Mexican sunflower blossom. (Photo by Kathy Keatley Garvey)

They look like shiny blue and black needles. Make that "flying" shiny blue and black needles. We spotted this damselfly foraging on a Mexican sunflower (Tithonia) this week  in our family bee garden. The blue was breathtaking. Can anything be so...

A male tule bluet on a fading Mexican sunflower blossom. (Photo by Kathy Keatley Garvey)
A male tule bluet on a fading Mexican sunflower blossom. (Photo by Kathy Keatley Garvey)

A male tule bluet on a fading Mexican sunflower blossom. (Photo by Kathy Keatley Garvey)

Posted on Thursday, August 13, 2015 at 5:57 PM

Medfly Wars

Mediterranean fruit fly

  “The war is over—again,” wrote reporter Pat Brennan of the Orange County Register in a news article published Aug. 14. Brennan was referring to the war against the Mediterranean fruit fly, a tiny pest that targets some 260...

Mediterranean fruit fly
Mediterranean fruit fly

Photo by Jack Kelly Clark, UC ANR

Posted on Friday, August 15, 2008 at 2:12 PM
 
E-mail
 
Webmaster Email: cetrinity@ucdavis.edu