Posts Tagged: spiders
Here's a good reason why you should not clean the fixtures around your porch lights--if you need a reason.
The lights attract all kinds of nocturnal flying insects. It's like the proverbial draw of a moth to a flame.
Spiders weave their webs on the light fixtures to trap their prey. If you remove the webs, you'll remove the insect smorgasbord.
Recently we saw an insect we'd never seen before on the light fixture: a praying mantis lying in wait, maybe to snare a moth or share the spider's bounty.
The porch light screams '"science project!" We remember our son's science projects in elementary school, including "Can a Plant Grow Upside Down?" and "How Fast Can a Yo-Yo Spin?" Somewhere the curious mind of a science student will look at the light on his or her front porch and ask: What insects are flying toward the night light and how many? How many predators are lying in wait? What do they eat? And, what roles do these lights and predators play in luring the insects to their death?
Meanwhile, the praying mantis has vanished. It's end of the season. Next year there will be many more praying mantids. One deposited an egg case beneath a table on the back porch. After they emerge and eat their brothers and sisters (no sibling love there!), one or more may hang out on the light fixture next year.
Porch lights attract predators and prey, including this predator, a praying mantis. (Photo by Kathy Keatley Garvey)
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 legs too many. They are also distinguished by their chelicerae with fangs that inject venom.
You've seen them. Black widow spiders. Jumping spiders. Crab spiders. Garden spiders.
If you fear them, there's a name for that fear: Arachnophobia. Wikipedia says that "People with arachnophobia tend to feel uneasy in any area they believe could harbor spiders or that has visible signs of their presence, such as webs. If arachnophobics see a spider, they may not enter the general vicinity until they have overcome the panic attack that is often associated with their phobia. Some people scream, cry, have trouble breathing, have excessive sweating or even heart trouble when they come in contact with an area near spiders or their webs. In some extreme cases, even a picture or a realistic drawing of a spider can also trigger fear."
The general fallacies, as listed by Rod Crawford, curator of arachnids:
- Spiders are insects.
- "Arachnid" is just a fancy name for spider.
- You can always tell a spider because it has eight legs.
- All spiders make webs.
- The orb web (round or "geometric" web) is a "normal" spider web.
- A "daddy-longlegs" is a kind of spider.
- Most spiders could not bite humans because their fangs are too small.
- Any spider species can be found anywhere.
- All spiders are male.
- Spiders are most numerous in late summer.
- You are never more than three feet from a spider.
- Spiders "suck the juices" of their prey, and do not literally eat it.
- Spiders don't stick to their own webs because their feet are oily.
Meanwhile, over at the Bohart Museum of Entomology at the University of California, Davis, plans are underway for an open house themed "Insect Myths." They will focus on spider myths, too.
The event, free and open to the public, is set for Sunday, Nov. 23 from 1 to 4 p.m. in Room 1124 of the Academic Surge Building on Crocker Lane, off LaRue Road. Directed by Lynn Kimsey, professor of entomology at UC Davis, the museum houses a global collection of nearly eight million specimens and is the home of the seventh largest insect collection in North America, and the California Insect Survey, a storehouse of the insect biodiversity. The museum is open to the public four days a week, Monday through Thursday (9 a.m. to noon and 1 to 5 p.m.) but it sponsors special weekend open houses as well.
The remaining schedule:
- Sunday, Nov. 23: “Insect Myths,” 1 to 4 p.m.
- Saturday, Dec. 20: “Insects and Art,” 1 to 4 p.m.
- Sunday, Jan. 11: “Parasitoid Palooza,” 1 to 4 p.m.
- Sunday, Feb. 8: “Biodiversity Museum Day,” noon to 4 p.m.
- Saturday, March 14: “Pollination Nation,” 1 to 4 p.m.
- Saturday, April 18: UC Davis Picnic Day, 10 a.m. to 3 p.m.
- Sunday, May 17: “Name That Bug! How About Bob?” 1 to 4 p.m.
- Saturday, July 18: “Moth Night,” 8 to 11 p.m.
When you attend the Bohart Museum open houses, you'll probably have the opportunity to hold and/or photograph "Rosie," a 24-year-old tarantula. It's one of the critters in the live "petting zoo," which also includes Madagascar hissing cockroaches, millipedes and walking sticks./h3>/span>
Jumping spider eyes the photographer. (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)
Bumble bees and spiders don't mix, you say?
Well, they will at the Bohart Museum of Entomology's open house from 1 to 4 p.m., Saturday, July 26. The family-centered event, free and open to the public, takes place in Room 1124 of the Academic Surge building on Crocker Lane, UC Davis campus.
Actually the theme is about spiders: "Arachnids: Awesome or Awful?" There you'll see black widow spiders, jumping spiders, cellar spiders and the like. But you don't have to "like" them as you do posts on Facebook!
You can also learn about bumble bees. Native pollinator specialist Robbin Thorp, emeritus professor of entomology at UC Davis, will be one of the tour guides. Thorp co-authored the newly published Bumble Bees of North America: An Identification Guide, which is available in the Bohart gift shop. He can autograph your book and answer questions about how to attract bees to your garden.
Thorp was recently interviewed by Tom Oder of the Mother Nature Network on how to garden for bumble bees. So was Steve Buchmann, an adjunct professor in entomology and ecology at the University of Arizona.
Thorp told Mother Nature Network that some bumble bees are in very serious decline, and others are doing quite well.
So, how do you attract them to your garden? Buchmann was quoted as saying: “Gardening for bumblebees is similar to gardening for other bees and pollinators." To entice bumblebees to visit your garden, “plant mints, Salvia, Monarda, plants in the sunflower family and clovers."
Read Oder's article for more information.
And keep your eyes open for the soon-to-be-published California Bees and Blooms: A Guide for Gardeners and Naturalists, co-authored by entomologist Gordon Frankie of UC Berkeley, Thorp, and two others with UC Berkeley connections: photographer/entomologist Rollin Coville and floral curator Barbara Ertter.
As for Saturday, July 26 there won't be a vote on whether you like bumble bees or spiders better, nor will you be asked to sing "Itsy Bitsy Spider" or "Baby Bumble Bee." It promises, though, to be fun and educational. Plus, you can enjoy the live "petting zoo," featuring 24-year-old Rosie the tarantula, assorted walking sticks, and the colorful Madagascar hissing cockroaches. Yes, they hiss.
The gift shop is also popular. You can browse through the books, jewelry, t-shirts, sweatshirts, insect-themed candy, butterfly houses, and insect-collecting kits.
The Bohart Museum, directed by Lynn Kimsey, professor of entomology at UC Davis, houses nearly eight million insect specimens and is the seventh largest insect collection in North America. It is also the home of the California Insect Survey, a storehouse of insect biodiversity. Noted entomologist Richard M. Bohart (1913-2007) founded the museum.
The museum's regular hours are from 9 a.m. to noon and 1 to 5 p.m. Mondays through Thursdays. It's closed to the public on Fridays and on major holidays. Admission is free. For more information, email education and outreach coordinator Tabatha Yang at email@example.com or telephone her at (530) 752-0493.
A camouflaged jumping spider eyes a honey bee on Japanese anemone. (Photo by Kathy Keatley Garvey)
Robbin Thorp points at a yellow-faced bumble bee, Bombus vosnesenski. (Photo by Kathy Keatley Garvey)
Neither will J. K. Rowling, author of the wildly popular Harry Potter series of books.
They hate spiders. In fact, by all accounts, they have arachnophobia, an intense fear of spiders that affects some 3.5 to 6.1 percent of the U.S. population.
No wonder the Bohart Museum of Entomology has themed its open house on Saturday, July 26: "Arachnids: Awesome or Awful?"
The event, free and open to the public, takes place from 1 to 4 p.m. at the Bohart Museum, located in Room 1124 of Academic Surge on Crocker Lane, UC Davis campus.
Many locally found spiders, including the black widow, jumping spider and cellar spiders--alive and specimens--will be exhibited. Want to know what the spider is that's dangling from your zinnias or crouched on a sedum or hiding in your woodpile? The Bohart Museum officials will tell you all about them.
Spiders are found throughout the world, except in Antarctica (where Timberlake and Rowling have probably pondered as suitable living quarters.)
A special attraction at the Bohart Museum will be Rosie, a 24-year-old tarantula reared by entomologist/Bohart volunteer Jeff Smith of Sacramento. Visitors are invited to hold it and photograph it.
Children and/or family activities are also planned, said Tabatha Yang, education and outreach coordinator at the Bohart.
Yang said some folks are "creeped out" by spiders while others are eager to see them. The open house will be an informational activity about them, but other insects will be there as well. In addition to its nearly eight million insects founds throughout the world, the Bohart houses live Madagascar hissing cockroaches and walking sticks, which visitors enjoy holding and photographing. A new addition is a Peruvian walking stick with red wings, yellow eyes and a velvety body.
This week is also National Moth Week.
The museum's gift shop, open throughout the year (credit-card purchases are accepted), includes T-shirts, sweatshirts, books, jewelry, insect-collecting equipment and insect-themed candy.
The Bohart Museum, directed by Lynn Kimsey, professor of entomology at UC Davis, houses the seventh largest insect collection in North America. It is also the home of the California Insect Survey, a storehouse of the insect biodiversity. Noted entomologist Richard M. Bohart (1913-2007) founded the museum.
Bohart officials schedule weekend open houses throughout the academic year. The museum's regular hours are from 9 a.m. to noon and 1 to 5 p.m. Mondays through Thursdays. The insect museum is closed to the public on Fridays and on major holidays. Admission is free. More information is available from Tabatha Yang at firstname.lastname@example.org or by telephoning (530) 752-0493.
A jumping spider ready to jump. (Photo by Kathy Keatley Garvey)
The eyes have it. (Photo by Kathy Keatley Garvey)
It's almost time for Halloween, when all self-respecting little ghosts, goblins and ghouls take a special interest in spiders.
We saw this little jumping spider (below) on a pink rose. It doesn't look like it could scare anything--except for maybe a sweat bee or hover fly.
This year the Explorit Science Center of Davis, a hands-on science museum located at 3141 5th St., is taking a special interest in spiders.
The center is sponsoring a number of programs on these critters and posted "Facts About Spiders" on its website.
For one thing, many people think spiders are insects. They're not.
Both spiders and insects are invertebrates, but spiders are not insects.
Insects have a head, thorax and abdomen, and the thorax has three pairs of legs. They also eyes, antennae and mouthparts, the Explorit Science Center website points out. "The entire body is protected by a tough outer covering called an exoskeleton. Animals that share these characteristics are called insects. The group to which they belong is called the Insecta."
Spiders, as the Explorit Science Center explains, have two main body parts. "The body consists of a combined head and thorax called the cephalothorax, and the abdomen. The cephalothorax has the eyes, mouthparts (no antennae) and four pairs of legs. Animals that share these characteristics include ticks, mites, scorpions and spiders. The group is called the Arachnida."
And speaking of spiders, schooolchildren visiting the Bohart Museum of Entomology on the UC Davis campus occasionally ask to "see the spiders." The Bohart is an insect museum (although the officials have been known to showcase a few spiders, too.)
Mark your calendar for Saturday, Oct. 27 for the Bohart's public open house from 1 to 4 p.m. in 1124 Academic Surge on Crocker Drive (nearest intersection is LaRue Road.) This is a pre-Halloween open house and there definitely will be assorted spiders at the insect museum!
A jumping spider on a pink rose soaks in some sun. (Photo by Kathy Keatley Garvey)
Garden spider weaving a web. (Photo by Kathy Keatley Garvey)
Black widow spider with egg sacs. (Photo by Kathy Keatley Garvey)