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Showing posts with label : spiders

September 6, 2016

L.A. Spider Survey News: Locally Rare Ground Spider Found in La Mirada Backyard

We are never sure what we are going to find when we go collecting in the backyards participating in the BioSCAN project.  We expect the usual suspects: widows, cellar spiders, various ground spiders, orb weavers, jumping spiders, and funnel web weavers.  Sometimes we find less commonly collected spiders, like green lynx spiders or crab spiders.  But, every once in a while, we find a spider we have...


September 1, 2016

Breaking Arachnophobia News!

A local silver garden orbweaver, Argiope argentata, in our Spider Pavilion. 

In a study published in Current Biology, researchers from two Swedish universities have used arachnophobes to demonstrate the success of "memory disruption" in the treatment of anxiety disorders. The authors set out to improve on the results of exposure therapy, in which a patient is gradually exposed to the object or context that provokes fear, anxiety or trauma. (In the study's case, subjects were exposed to photos of spiders.)

Exposure therapy works by replacing an old fear memory with a safer one. But sometimes exposure therapy fails to have a...


April 29, 2016

Meet a Citizen Scientist: Eric Keller

This week's blog is written by one of our @NHMLA citizen scientists, Eric Keller:

If I were to make a list titled, “Accomplishments I Never Really Planned On But Achieved Anyways,” I think having a species of phorid fly named after me would have to be at the very top. And how did I manage to do this? Simple, I just volunteered as a citizen scientist by giving a little time and a small patch of real estate to Dr. Brian Brown and his BioSCAN team at the Natural History Museum of Los Angeles County and as a nice thank you the museum dubbed one of their newly discovered species “Megaselia kelleri”.

Digital model of a Coffin Fly, Conicera tibialis.

But this is not all I got out of the...


January 26, 2016

L.A.’s Friendly Neighborhood Spider Woman (and the Spiders from Mars?)

I have an incurable case of arachnophilia. Ever since early childhood, even before reading “Charlotte’s Web,” my mother constantly scolded me to stop picking up spiders (good advice if you don’t know what kind it is) and to just observe them instead. Where others scream, “Kill it with fire!” I said, “Let’s feed her crickets.” To me they are delicate long-legged ballerinas, caring mothers, industrious homebuilders, and astonishingly clever predators.  Alas, arachnophilia is very rare. Fear of spiders, on the other hand, is so prevalent, it made every “top ten” list of phobias I could find, and one study showed that arachnophobia even affects many entomologists (6 legs good, 8 legs bad?)!
 
 
The author unabashedly, unapologetically in love with an orb-weaving spider from the...

September 24, 2013

Green Lacewings: Eat, Prey, Love Biocontrol

We've added a new insect delicacy to the menu for the dwellers in our Spider Pavilion. That's right, usually the ladies (and few gents), that call the spider pavilion home, get fed butterflies, crickets, and flies, but as of this week we've added green lacewings!

Whitebanded Crab Spider, Misumenoides formosipes, getting ready to eat a Green Lacewing, Chrysoperla rufilabris.

Green lacewings, belong to the insect order Neuroptera, also known as nerve-wings. Not only does this mean that most people have never heard of them, it also means they have complex designs, or "nerves" in their wings. Some might think that this translates into flying well, but alas, this group of insects...


September 20, 2013

I Found a Huge Green Spider in My Garden!

Ever found a large green spider in your garden? Chances are, if you're in the Los Angeles area, the spider you've found is a Green Lynx Spider, Peucetia viridans.

Here's one that NHM staffer, Richard Smart, found in our Nature Gardens on Wednesday:

Photo taken by NHM's own Spider-Woman, Cat Urban.

This was perfect timing, as we desperately needed one for display in our Spider Pavilion, which opens to members today and to everyone on Sunday. As many of you know, this exhibit is a place to get up close and personal with spiders in a safe and garden-like setting.

To prime visitors for the experience of walking amongst hundreds of free, web-spinning spiders (that's right, the Spider Pavilion is an immersive...


October 31, 2012

Psycho Spider Killer: What is It?

I've been waiting an entire month to write this post, and maybe my entire life to entomologically riff off a Talking Heads song title! On Monday, October 1, I found a large tarantula hawk wasp (a.k.a Pepsis wasp) on some flowering Baccharis in the North Campus. This blue wasp with orange wings was the first of its kind spotted in our new gardens, and is indeed a spider killer.

Tarantula Hawk on Baccharis

This is what Insects of the Los Angeles Basin has to say about tarantula hawks preying on spiders:

"When a female wasp finds a...

September 22, 2012

Q: What are Those Miniature Spiky Puffballs? A: Brown Widow Egg Sacs

Earlier this week, staff found some small circular egg cases on a gate in the North Campus. Upon closer inspection we realized they were brown widow, Latrodectus geometricus, egg sacs. But how did we know this?
Earlier this week, staff found some small circular egg cases on a gate in the North Campus. Upon closer inspection we realized they were brown widow, Latrodectus geometricus, egg sacs. But how did we know this?
 
Two egg sacs, each containing about 100 eggs,
notice the geometric design.
 
...

February 29, 2012

Killer Legs: Crab Spider Wins Prize with Eight!

On Sunday, February 26, Museum Educator Anna Holden, and myself took some families out to the North Campus to collect spiders! The spiders were collected so they can be identified and preserved as part of our ongoing L.A. Spider Survey. They will also be added to our ever-growing North Campus species list.
 

Briana Burrows and Anna Holden
(looks like they really like collecting spiders too)


All told, we collected 17 spiders (not bad for a newly planted habitat) many of which were very small and non-descript think tiny brown specks almost indistinguishable from a piece of dirt (did I mention these children have amazing eyesight?). However, there was one...


September 29, 2011

Men's Restroom in Long Beach is Voted Best Spider Collecting Site

Over the past few weeks myself and Shawna Joplin, Museum Coordinator of Animal Care and Education, have been madly working to get the Spider Pavilion ready by collecting hundreds of spiders for display. This involved a trip to the swamps of New Orleans to collect the largest orb weavers in North America and also multiple collecting trips around Los Angeles for our local spider species.
 
Cajun Swamp Adventure
The spiders Shawna and I collected in New Orleans are golden silk spiders, Nephila clavipes, also known as banana spiders because of their banana-ish abdomen. These spiders are common in and around swampy areas and are easy to spot on their largeup to 3 feed in diameter!golden webs (...