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Nature Gardens at NHM: LA's Urban Nature

Showing posts with label : pottery

September 9, 2013

Nature's Tiniest Potters

Did you know there are small wasps here in Los Angeles that are potters? No, I don't mean some sort of weird waspish Harry Potter fan club—although that sounds like something I'd be totally into—I mean wasps that use mud to make miniature pots. Take a look at the craftsmanship, the sharply narrowed neck and that wide fluted rim, exquisite!

Photo taken by NHM Head Gardener Richard Hayden, with my fingertip for some perspective!

This "pot" was constructed by a small wasp (one of those solitary wasps that are not prone to stinging us humans), which entomologists call potter wasps. However, this wasp wasn't just being artistic, she constructed this pot for a purely utilitarian function—it is actually a nest for an egg!

A few weeks ago during a California Naturalist training, I spotted this...


May 2, 2013

Do you have Museum Malaise?

You better not! However, just in case you do I have a line of curative agents perfect for any and all afflicted with such exhibit ennui. The elixirs I speak of are our new L.A. nature exhibits, Nature Lab and Nature Gardens, and they're about to open on June 9!

I've written loads of posts about both exhibits, so I thought it might be interesting to have a guest writer this week (I swear it's not because I'm too busy)! Dean Pentcheff from our Research and Collections staff is going to answer the question that everyone will be asking when the Nature Gardens open, who's camping in that tent out there?

"Peek between the bushes in the Nature Garden and you’ll see what looks like someone’s overnight camping spot. We do host overnight sleepovers at NHM but we don’t do it in the garden (at least not yet). What’s going on here?

...

June 15, 2012

I Have a Cockroach in My Office!

Last week, Tania Perez, who is on our Museum education staff, found a cockroach crawling on our office wall! Said roach was quickly trapped and contained and was waiting for me when I got back to my office. 

Here in North America we have 55 species of cockroach (there are 3500 total in the world)! Of these 55 species, six in California are considered pests. The American Cockroach is the largest of these six roaches, with individuals reaching a maximum of 2 inches in length. Surprisingly, this roach isn't from America at all. It actually native to Africa. The species is also known as the ship cockroach and has hitched rides on ships traveling from Africa to the U.S. A likely apocryphal story,  it paints the picture in such a way as to imply it was slave ships during the 1600s that inadvertently transported these insects to our shores.

Although this roach is sometimes found in...

May 17, 2012

Pond Babies: Dragonflies and Diving Beetles

Two weeks ago I told you I'd fill you in when I found dragonfly nymphs in our pond. I wasn't expecting to be able to give you this update so quickly, but SURPRISE, nature moves fast, people! In the last few weeks, I've found more than 50 dragonfly exuviae (the papery exoskeletons shed between molts) attached to the rocks of the pond. Of course, this prompted me to take out my dip net and look for nymphs in the water.

Here's a picture of one I found:

Variegated Meadowhawk, Sympetrum corruptum, nymph
Found May 5, 2012

While I was dipping for the dragonfly nymphs, I found a lot of other macro-invertebrates. The list isn't very long, yet, but includes immature mosquitoes, chironomid midges, mayflies, and predacious diving beetles!

...

March 9, 2012

Thorny Devils in the Garden

I was recently out and about in the garden and found some fascinating insects, Keelbacked Treehoppers, Antianthe expansa. They were on some of our celery plants and are, according to Vanessa Vobis Master Gardener and Museum Gallery Interpreter, "a very annoying pest on our tomatoes."


Adult Keelbacked Treehopper on celery
(Approximately ¼ inch or 7 mm long)

When I found the Keelbacked Treehoppers, all but one were in the nymphal (immature) stage. As nymphs, these insects do not have wings (this is true for all insectsjust look at caterpillars, grubs, and maggots), and are bound to the area in which they were deposited as eggs by their mother. The nymphs are often attended by ants, which feed on their sugary excreta and provide a level of defense against the treehopper's predators....

February 24, 2012

First Clouded Sulphur Butterfly Pupa in North Campus

Last week, Jany Alvarez, one of the Museum's Guest Relations staff, was sitting at the bus stop adjacent to the North Campus. While she was waiting for her bus, she saw an interesting sighta caterpillar crawling along the sidewalk! Thinking that the caterpillar would be better off on a plant than on the cement, she picked the caterpillar up and placed it carefully on a Dudleya plant on the Living Wall.

Later that day, another Guest Relations staffer watched the caterpillar pupate! By the time word travelled to me, the pupa looked like this:

Yellow pupa on Dudleya

When I came into work on Tuesday morning, the pupa had changed color! I took more pictures and went back to my office to identify it.

...

January 20, 2012

Aphid Eating Flower Fly Found in North Campus

There are over 150,000 species of flies in the world! Most visitors who come to the Museum can name only a few of these flies (house fly, horse fly, or mosquito for examples) and many hold the belief that we would be better off without flies in our world. On Wednesday, January 18, we found a fly that I am sure will help you realize that all flies can't be cast as "bad" characters I introduce the humble aphid eating flower fly, Eupeodes volucris.

Female Eupeodes volucris
Photo taken by Jerry Friedman

Why do people like these flies and not others? This isn't an easy question to answer, but I'll have a go... First of all, these flies eat aphids and as any gardener will tell you, aphids are a serious garden pest....

January 5, 2012

Walking Sticks Mysteriously Appear in Museum

Last Friday two Indian walking sticks, Carausius morosus, mysteriously showed up inside the Museum! They didn't escape from the Insect Zoo (we've never kept this species of walking stick before), and we haven't been able to find out exactly how they got here. What we do know is that the insects were discovered after a visitor felt one "fall" on his arm, and then promptly reported it to a staff person.


One of the Indian walking sticks found in the Museum!


Indian walking sticks, a.k.a. laboratory walking sticks, are one of the most common walking sticks around. They are often kept as pets and classroom teaching tools, and their eggs can even be purchased on eBay for fish food! Surprisingly these insects have recently established themselves in our area through...


November 9, 2011

Niña de la Tierra: Children of the Earth

No it's not the title of a horror film, Children of the Earth is actually one of the many common names for Stenopelmatus fuscus. Other names lovingly given to this insect are Jerusalem Cricket, Potato Bug, Skull Insect, and my personal favorite, Devil's Baby!

Earlier this week Sam Easterson found one in his front yard and captured this picture and footage.

Are you Looking at Me?






These crickets are very common in Los Angeles. Consequently, my colleague Brian Brown, the Museum's Curator of Entomology, and I get calls about them all the time. I most often get calls after heavy rains, when these crickets come up from the depths of their soily abodes. They are stellar diggers (Check out their fossorial front legs, modified for digging) and live most of the...