Cooperative Extension San Joaquin County
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Cooperative Extension San Joaquin County

Posts Tagged: Rosser Garrison

To 'Catch' a Dragonfly

A wind-whipped female variegated meadowhawk, a Sympetrum corruptum. (Photo by Kathy Keatley Garvey)

Dragonflies are fierce predators but they are predator-shy.  "If it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck," as the saying goes. If you look like a predator, walk or fly like a predator and act like...

A wind-whipped female variegated meadowhawk, a Sympetrum corruptum. (Photo by Kathy Keatley Garvey)
A wind-whipped female variegated meadowhawk, a Sympetrum corruptum. (Photo by Kathy Keatley Garvey)

A wind-whipped female variegated meadowhawk, a Sympetrum corruptum. (Photo by Kathy Keatley Garvey)

Posted on Monday, October 5, 2015 at 7:02 PM

Dragonflies! Who Isn't Fascinated by Dragonflies?

Dragonfly expert Rosser Garrison (far right) leads a discussion. From left are Bohart associate Greg Kareofelas; Bob Stahmer of Stockton, a UC Davis alumnus; and UC Davis entomology graduate student Ziad Khouri, who studies with Bohart director/UC Davis professor Lynn Kimsey. (Photo by Kathy Keatley Garvey)

Dragonflies! Who isn't fascinated by dragonflies? They're an ancient insect. Their ancestors existed before dinosaurs. Indeed, fossil records show that they were the world's largest flying insects, some with wingspans measuring three feet. Visitors at...

Dragonfly expert Rosser Garrison (far right) leads a discussion. From left are Bohart associate Greg Kareofelas; Bob Stahmer of Stockton, a UC Davis alumnus; and UC Davis entomology graduate student Ziad Khouri, who studies with Bohart director/UC Davis professor Lynn Kimsey. (Photo by Kathy Keatley Garvey)
Dragonfly expert Rosser Garrison (far right) leads a discussion. From left are Bohart associate Greg Kareofelas; Bob Stahmer of Stockton, a UC Davis alumnus; and UC Davis entomology graduate student Ziad Khouri, who studies with Bohart director/UC Davis professor Lynn Kimsey. (Photo by Kathy Keatley Garvey)

Dragonfly expert Rosser Garrison (far right) leads a discussion. From left are Bohart associate Greg Kareofelas; Bob Stahmer of Stockton, a UC Davis alumnus; and UC Davis entomology graduate student Ziad Khouri, who studies with Bohart director/UC Davis professor Lynn Kimsey. (Photo by Kathy Keatley Garvey)

UC Davis entomology graduate student Ziad Khouri admiring Rosser Garrison's dragonfly display. (Photo by Kathy Keatley Garvey)
UC Davis entomology graduate student Ziad Khouri admiring Rosser Garrison's dragonfly display. (Photo by Kathy Keatley Garvey)

UC Davis entomology graduate student Ziad Khouri admiring Rosser Garrison's dragonfly display. (Photo by Kathy Keatley Garvey)

A close-up of the world's largest dragonflies and some of the world's smallest dragonflies, part of the Rosser Garrison collection. (Photo by Kathy Keatley Garvey)
A close-up of the world's largest dragonflies and some of the world's smallest dragonflies, part of the Rosser Garrison collection. (Photo by Kathy Keatley Garvey)

A close-up of the world's largest dragonflies and some of the world's smallest dragonflies, part of the Rosser Garrison collection. (Photo by Kathy Keatley Garvey)

n front (from left) are Andrew Rehn of the California Department of Fish and Wildlife; Kathy Claypole Biggs of Sebastopol and McCloud, author of dragonfly books; Sandra Hunt-von Arb, senior biologist at the Pacific Northwestern Biological Resources, McKinleyville, Calif. who leads dragonfly workshops in Northern California.  In back are Rosser Garrison, California Department of Food and Agriculture; and Greg Kareofelas, Bohart Museum associate. (Photo by Kathy Keatley Garvey)
n front (from left) are Andrew Rehn of the California Department of Fish and Wildlife; Kathy Claypole Biggs of Sebastopol and McCloud, author of dragonfly books; Sandra Hunt-von Arb, senior biologist at the Pacific Northwestern Biological Resources, McKinleyville, Calif. who leads dragonfly workshops in Northern California. In back are Rosser Garrison, California Department of Food and Agriculture; and Greg Kareofelas, Bohart Museum associate. (Photo by Kathy Keatley Garvey)

In front (from left) are Andrew Rehn of the California Department of Fish and Wildlife; Kathy Claypole Biggs of Sebastopol and McCloud, author of dragonfly books; Sandra Hunt-von Arb, senior biologist at the Pacific Northwestern Biological Resources, McKinleyville, Calif. who leads dragonfly workshops in Northern California. In back are Rosser Garrison, California Department of Food and Agriculture; and Greg Kareofelas, Bohart Museum associate. (Photo by Kathy Keatley Garvey)

Posted on Tuesday, September 22, 2015 at 6:05 PM

Know Your Dragonflies!

A red flameskimmer dragonfly, (Libellula saturata) perches on a bamboo stake. (Photo by Kathy Keatley Garvey)

You're walking through a park and suddenly spot a dragonfly perched on a stick. "What's that?" you ask. As you edge closer, it takes off. "Missed it!" Well, you won't want to miss the Bohart Museum of Entomology's open house on Sunday, Sept. 20...

A red flameskimmer dragonfly, (Libellula saturata) perches on a bamboo stake. (Photo by Kathy Keatley Garvey)
A red flameskimmer dragonfly, (Libellula saturata) perches on a bamboo stake. (Photo by Kathy Keatley Garvey)

A red flameskimmer dragonfly, (Libellula saturata) perches on a bamboo stake. (Photo by Kathy Keatley Garvey)

Variegated meadowhawk (Sympetrum corruptum). (Photo by Kathy Keatley Garvey)
Variegated meadowhawk (Sympetrum corruptum). (Photo by Kathy Keatley Garvey)

Variegated meadowhawk (Sympetrum corruptum). (Photo by Kathy Keatley Garvey)

Widow skimmer (Libellula luctuosa). (Photo by Kathy Keatley Garvey)
Widow skimmer (Libellula luctuosa). (Photo by Kathy Keatley Garvey)

Widow skimmer (Libellula luctuosa). (Photo by Kathy Keatley Garvey)

Red-veined meadowhawk (Sympetrium madidum). (Photo by Kathy Keatley Garvey)
Red-veined meadowhawk (Sympetrium madidum). (Photo by Kathy Keatley Garvey)

Red-veined meadowhawk (Sympetrium madidum). (Photo by Kathy Keatley Garvey)

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
 
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