Cooperative Extension San Joaquin County
University of California
Cooperative Extension San Joaquin County

Posts Tagged: crab spider

The Crab Spider and the Bee

A crab spider has just ambushed a honey bee on a bluebeard blossom. (Photo by Kathy Keatley Garvey)

It was a good day for a crab spider. It was NOT a good day for a honey bee. It's early evening and here's this bee foraging on a bluebeard plant, Caryopteris x clandonensis, totally unaware of the  ambush predator lying in wait. The predator and...

A crab spider has just ambushed a honey bee on a bluebeard blossom. (Photo by Kathy Keatley Garvey)
A crab spider has just ambushed a honey bee on a bluebeard blossom. (Photo by Kathy Keatley Garvey)

A crab spider has just ambushed a honey bee on a bluebeard blossom. (Photo by Kathy Keatley Garvey)

The crab spider can turn colors from white to yellow or yellow to white This one is yellow, awaiting prey on a blanketflower, Gallardia. (Photo by Kathy Keatley Garvey)
The crab spider can turn colors from white to yellow or yellow to white This one is yellow, awaiting prey on a blanketflower, Gallardia. (Photo by Kathy Keatley Garvey)

The crab spider can turn colors from white to yellow or yellow to white This one is yellow, awaiting prey on a blanketflower, Gallardia. (Photo by Kathy Keatley Garvey)

Posted on Monday, August 5, 2019 at 6:34 PM

What's for Dinner? How About a Green Bottle Fly?

A crab spider dines on a green bottle fly in a lavender patch in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

What's for dinner? A crab spider, camouflaged in our lavender patch, didn't catch a honey bee, a butterfly, an ant or a syrphid fly. No, it nailed a green bottle fly. We couldn't help but notice. The fly's metallic blue-green coloring stood in sharp...

A crab spider dines on a green bottle fly in a lavender patch in Vacaville, Calif. (Photo by Kathy Keatley Garvey)
A crab spider dines on a green bottle fly in a lavender patch in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

A crab spider dines on a green bottle fly in a lavender patch in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

The crab spider is camouflaged, but its prey, a green bottle fly with its familiar metallic blue-green coloring, isn't. (Photo by Kathy Keatley Garvey)
The crab spider is camouflaged, but its prey, a green bottle fly with its familiar metallic blue-green coloring, isn't. (Photo by Kathy Keatley Garvey)

The crab spider is camouflaged, but its prey, a green bottle fly with its familiar metallic blue-green coloring, isn't. (Photo by Kathy Keatley Garvey)

Posted on Tuesday, June 25, 2019 at 4:53 PM

Itsy Bitsy Spider

Yes, we can see you. A crab spider on Mexican sunflower (Tithonia). (Photo by Kathy Keatley Garvey)

The itsy bitsy spider climbed up the water spout. Down came the rain and washed the spider out. Out came the sun and dried up all the rain and the itsy bitsy spider climbed up the spout again.--Nursery Rhyme It was an itsy bitsy spider. But it wasn't...

Yes, we can see you. A crab spider on Mexican sunflower (Tithonia). (Photo by Kathy Keatley Garvey)
Yes, we can see you. A crab spider on Mexican sunflower (Tithonia). (Photo by Kathy Keatley Garvey)

Yes, we can see you. A crab spider on Mexican sunflower (Tithonia). (Photo by Kathy Keatley Garvey)

The crab spider ventures out on a petal of the Mexican sunflower (Tithonia). (Photo by Kathy Keatley Garvey)
The crab spider ventures out on a petal of the Mexican sunflower (Tithonia). (Photo by Kathy Keatley Garvey)

The crab spider ventures out on a petal of the Mexican sunflower (Tithonia). (Photo by Kathy Keatley Garvey)

A perfectly camouflaged crab spider on a gold coin flower (Asteriscus maritimus). (Photo by Kathy Keatley Garvey)
A perfectly camouflaged crab spider on a gold coin flower (Asteriscus maritimus). (Photo by Kathy Keatley Garvey)

A perfectly camouflaged crab spider on a gold coin flower (Asteriscus maritimus). (Photo by Kathy Keatley Garvey)

Posted on Thursday, August 9, 2018 at 5:00 PM
Focus Area Tags: Environment Yard & Garden

Autumn's Majesty: Tithonia

A Gulf Fritillary, Agraulis vanillae, lands on a Mexican sunflower. (Photo by Kathy Keatley Garvey)

If there's any flower that should be crowned "Autumn's Majesty," that would be the Mexican sunflower (Tithonia rotundifolia), aka "Torch."A member of the sunflower family (Asteraceae), it carries "the torch of life" throughout spring, summer and autumn,...

A Gulf Fritillary, Agraulis vanillae, lands on a Mexican sunflower. (Photo by Kathy Keatley Garvey)
A Gulf Fritillary, Agraulis vanillae, lands on a Mexican sunflower. (Photo by Kathy Keatley Garvey)

A Gulf Fritillary, Agraulis vanillae, lands on a Mexican sunflower. (Photo by Kathy Keatley Garvey)

In a sea of nearly spent Mexican sunflowers, a lone migrating monarch, Danaus plexippus, finds food. (Photo by Kathy Keatley Garvey)
In a sea of nearly spent Mexican sunflowers, a lone migrating monarch, Danaus plexippus, finds food. (Photo by Kathy Keatley Garvey)

In a sea of nearly spent Mexican sunflowers, a lone migrating monarch, Danaus plexippus, finds food. (Photo by Kathy Keatley Garvey)

A honey bee, Apis mellifera, takes a liking to the Tithonia, aka Mexican sunflower. (Photo by Kathy Keatley Garvey)
A honey bee, Apis mellifera, takes a liking to the Tithonia, aka Mexican sunflower. (Photo by Kathy Keatley Garvey)

A honey bee, Apis mellifera, takes a liking to the Tithonia, aka Mexican sunflower. (Photo by Kathy Keatley Garvey)

A skipper, family Hesperiidae, hangs out on the Tithonia. (Photo by Kathy Keatley Garvey)
A skipper, family Hesperiidae, hangs out on the Tithonia. (Photo by Kathy Keatley Garvey)

A skipper, Hesperiidae, hangs out on the Tithonia. (Photo by Kathy Keatley Garvey)

The wings of a black hover fly or syrphid, aka
The wings of a black hover fly or syrphid, aka "Mexican cactus fly" (Copestylum mexicanum), gleam in the sunlight. (Photo by Kathy Keatley Garvey)

The wings of a black hover fly or syrphid, aka "Mexican cactus fly" (Copestylum mexicanum), gleam in the sunlight. (Photo by Kathy Keatley Garvey)

Predators hang out on the Mexican sunflower, too. A crab spider, family Thomisidae, waits for prey. (Photo by Kathy Keatley Garvey)
Predators hang out on the Mexican sunflower, too. A crab spider, family Thomisidae, waits for prey. (Photo by Kathy Keatley Garvey)

Predators hang out on the Mexican sunflower, too. A crab spider, family Thomisidae, waits for prey. (Photo by Kathy Keatley Garvey)

Posted on Wednesday, October 18, 2017 at 5:00 PM

How to Plan a Menu for a Crab Spider

A crab spider dines on a sweat bee, a female Halictus tripartitus (as identified by native pollinator specialist Robbin Thorp, distinguished emeritus professor of entomology at UC Davis). (Photo by Kathy Keatley Garvey)

Dear Crab Spider, Please don't eat the pollinators. You may help yourself to a mosquito, a crane fly, a lygus bug, an aphid, and a katydid, not necessarily in that order. And more than one if you like. In fact, how about an all-you-can-eat buffet of...

A crab spider dines on a sweat bee, a female Halictus tripartitus (as identified by native pollinator specialist Robbin Thorp, distinguished emeritus professor of entomology at UC Davis). (Photo by Kathy Keatley Garvey)
A crab spider dines on a sweat bee, a female Halictus tripartitus (as identified by native pollinator specialist Robbin Thorp, distinguished emeritus professor of entomology at UC Davis). (Photo by Kathy Keatley Garvey)

A crab spider dines on a sweat bee, a female Halictus tripartitus (as identified by native pollinator specialist Robbin Thorp, distinguished emeritus professor of entomology at UC Davis). (Photo by Kathy Keatley Garvey)

Missed! A male long-horned bee, probably Melissodes agilis, eludes the crab spider. (Photo by Kathy Keatley Garvey)
Missed! A male long-horned bee, probably Melissodes agilis, eludes the crab spider. (Photo by Kathy Keatley Garvey)

Missed! A male long-horned bee, probably Melissodes agilis, eludes the crab spider. (Photo by Kathy Keatley Garvey)

A crab spider on top of the world, the cone of a petal-less blanket flower (Gaillardia). (Photo by Kathy Keatley Garvey)
A crab spider on top of the world, the cone of a petal-less blanket flower (Gaillardia). (Photo by Kathy Keatley Garvey)

A crab spider on top of the world, the cone of a petal-less blanket flower (Gaillardia). (Photo by Kathy Keatley Garvey)

Hey, I can wait all day. And I will. I'm a Wait Watcher. (Photo by Kathy Keatley Garvey)
Hey, I can wait all day. And I will. I'm a Wait Watcher. (Photo by Kathy Keatley Garvey)

Hey, I can wait all day. And I will. I'm a Wait Watcher. (Photo by Kathy Keatley Garvey)

Posted on Tuesday, July 5, 2016 at 5:32 PM

Next 5 stories | Last story

 
E-mail
 
Webmaster Email: mdhachman@ucdavis.edu