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Nature Gardens at NHM: LA's Urban Nature

Showing posts with label : Misumenoides formosipes

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...


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?

Two egg sacs, each containing about 100 eggs,
notice the geometric design.

Differences between brown widows and western black widows:

Brown Widows
Egg sacs are pale yellow and spiky (BINGO)
Egg sacs contain upto 150 spiderlings (best word ever)
Can lay 20 sacs over their lifespan
Adult females are USUALLY tan with an orange hourglass design on the underside of the abdomen
Lower incidence of medically significant spider bites

Western Black Widows...

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 (...