Cooperative Extension San Joaquin County
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Cooperative Extension San Joaquin County

Posts Tagged: crab spider

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

Spiders? Scary? Spooky?

Jumping spider eyes the photographer. (Photo by Kathy Keatley Garvey)

"Look, there's a spider!" A sure-fire way to frighten arachnophobics is the very mention of "spiders"--especially on Halloween. Spiders aren't insects but arthropods, order Araneae. They have eight legs, which according to some, are seven...

Jumping spider eyes the photographer. (Photo by Kathy Keatley Garvey)
Jumping spider eyes the photographer. (Photo by Kathy Keatley Garvey)

Jumping spider eyes the photographer. (Photo by Kathy Keatley Garvey)

Crab spider on sedum eyes a honey bee. (Photo by Kathy Keatley Garvey)
Crab spider on sedum eyes a honey bee. (Photo by Kathy Keatley Garvey)

Crab spider on sedum eyes a honey bee. (Photo by Kathy Keatley Garvey)

Garden spider captures a honey bee. (Photo by Kathy Keatley Garvey)
Garden spider captures a honey bee. (Photo by Kathy Keatley Garvey)

Garden spider captures a honey bee. (Photo by Kathy Keatley Garvey)

Posted on Friday, October 31, 2014 at 2:06 PM

Lying in Wait

Crab spider on a Mexican sunflower, Tithonia. (Photo by Kathy Keatley Garvey)

They're ambush predators. Here you are, a bee, touching down on a flower and little do you know there's a patient and persistent crab spider lying in wait.  Sometimes they're camouflaged, matching the color of a blossom, like a yellow crab spider...

Crab spider on a Mexican sunflower, Tithonia. (Photo by Kathy Keatley Garvey)
Crab spider on a Mexican sunflower, Tithonia. (Photo by Kathy Keatley Garvey)

Crab spider on a Mexican sunflower, Tithonia. (Photo by Kathy Keatley Garvey)

Crab spider on a gold coin. (Photo by Kathy Keatley Garvey)
Crab spider on a gold coin. (Photo by Kathy Keatley Garvey)

Crab spider on a gold coin. (Photo by Kathy Keatley Garvey)

Crab spider on sedum. (Photo by Kathy Keatley Garvey)
Crab spider on sedum. (Photo by Kathy Keatley Garvey)

Crab spider on sedum. (Photo by Kathy Keatley Garvey)

Posted on Thursday, July 11, 2013 at 9:58 PM
Tags: crab spider (14), Mexican sunflower (48), Tithonia (56)

A Bad Day for a Butterfly

Crab spider with its kill, a cabbage white butterly. (Photo by Kathy Keatley Garvey)

It was a bad day for a butterfly. We stopped by the Ruth Risdon Storer Garden, part of the UC Davis Arboretum, at noon today as triple-digit temperatures climbed to a scorching 103. We spotted a few cabbage white butterflies (Pieris rapae) nectaring...

Crab spider with its kill, a cabbage white butterly. (Photo by Kathy Keatley Garvey)
Crab spider with its kill, a cabbage white butterly. (Photo by Kathy Keatley Garvey)

Crab spider with its kill, a cabbage white butterly. (Photo by Kathy Keatley Garvey)

This one got away. (Photo by Kathy Keatley Garvey)
This one got away. (Photo by Kathy Keatley Garvey)

This one got away. (Photo by Kathy Keatley Garvey)

Posted on Monday, July 1, 2013 at 9:24 PM

All That Glitters Is Not Gold

Camouflaged crab spider waits for prey on a gold coin. (Photo by Kathy Keatley Garvey)

All that glitters is not gold.The gold coin flowers (Asteriscus maritimus) planted in our yard attract a goodly number of leafcutter bees and hover flies (aka flower flies and syrphid flies).But if you look closely, gold coins attract something...

Camouflaged crab spider waits for prey on a gold coin. (Photo by Kathy Keatley Garvey)
Camouflaged crab spider waits for prey on a gold coin. (Photo by Kathy Keatley Garvey)

Camouflaged crab spider waits for prey on a gold coin. (Photo by Kathy Keatley Garvey)

Close-up of crab spider camouflaged on gold coin. (Photo by Kathy Keatley Garvey)
Close-up of crab spider camouflaged on gold coin. (Photo by Kathy Keatley Garvey)

Close-up of crab spider camouflaged on gold coin. (Photo by Kathy Keatley Garvey)

Posted on Friday, July 8, 2011 at 7:20 PM

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