Posts Tagged 'spiders'

Spiders

These small wolf spiders have been in every layer of leaves I’ve looked at closely in Green-Wood for a couple of weeks now. Not grass, leaves, which give them so much cover.
So many in the Dell Water I was afraid I’d step on them. They are runners and jumpers.
A different species, and found in different habitat. This time a leaf pile. There was a small beetle as well, but it was too quick for me.

On Thursday, they’ll be some more here about leaves and the critters they hide. (Thursday! Two whole days away, and people say I’m a pessimist!)

Spiders!

I don’t think they’re scary, but my goodness, this one sure was big.
Common House?
One of the long-jawed orbweavers?
Couldn’t see this with the naked eye, but in the camera, wow!
Basilica Orbweaver.
Characteristically makes vertical hangings of its egg cases.
There were a bunch of these Basilicas in these bushes. What a revelation!
Sometimes the big webs have somebody in the center of them. Spotted orbweaver of some kind.
Sometimes they don’t. But the spider is going to be somewhere nearby.
Long-bodied Cellar?

Spiders

Of all the creepy-crawlies, spiders might be the hardest to photograph. They’re small and the slightest breeze moves their webs. Autofocus pretty much refuses to recognize them.
Manual focus is tricky, too.
This preposterous creature is in fact a Spined Micrathena. The spiny adomen may deter predators; the un-spider-like shape may do something similar. To the naked eye, I first wondered if this was a moth stuck in a web.
I’ve been poking about the common milkweed. It’s a good place to build a web, what with all the creatures that hang around that plant.
Underneath a leaf, a very small one lurks in anticipation. That white dot below her?
A Monarch egg. I’d just seen the butterfly deposit this.
A “Trashline Orbweaver” of the genus Cyclosa. How descriptive. I spotted two of these in a patch of buddleia (pollinator crack).
And there, lurking in the center — do you see the death’s head? — she waits for some unwary prey to ensticken to the web. From the invaluable (and not inexpensive) Tracks and Signs of Insects & Other Invertebrates by Eisenman and Charney,

“The trashline orbweavers (Cyclosa) […] also make vertical stabilimentum, but not a zigzag. They usually decorate it with prey remains, their own shed skins, other debris, and eventually their egg sacs. The spider is well camouflaged resting in the middle of the this ‘trashline,” and it has been demonstrated that decorated webs trap significantly more insects than do undecorated webs.”
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FYI: Margaret B. Gargiullo has passed. She was a botanist/plant ecologist who was a big influence on the community of native plant enthusiasts here. Among other things, she was model of a second career person: she began her professional life as a nurse. Her books, including a field guide to the plants of Costa Rica, were published when she was in her sixties. Her Guide to the Native Plants of the New City Region is a must. Her An Ecological Manual of NYC Plants in Natural Areas can be read on-line.

Sheet Music

A bridge and a stream. What more could Organ Pipe Mud-dauber Wasps (Trypoxylon politum) need than shelter from the rain and a source of their building material?

Well, spiders, of course. These wasps paralyze spiders to feed their young inside these mud-nests. Here’s an interesting observation: Tufted Titmouse and Downy Woodpeckers breaking into these to get the larval wasps. And also the spiders?

I don’t seem to have a photograph of one of these wasps. I’ve sure seen a similar species, the Black and Yellow Mud-daubers (Sceliphron caementarium). They’re particularly photogenic, or just hang around long enough for photographs. They also feed their young spiders.

(Click on image above to make it fill your screen if not your speakers.)
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Well, if you think I’m a worse case scenario-ist, read this on the effects of the return to Miocene-level global temperatures for the centuries to come. We’re remaking the planet like it was 16 million years ago!

Spider Year

It’s the one year anniversary, more or less, of the spider who stayed out in the cold. This big Araneus diadematus orb-weaver had her web(s) outside one of our windows for three months last fall.We only saw her eating once in that time.

All B&B spider adventures can be seen here. The current indoor spider census, which is admittedly not thorough: two.

Spiders

An Argiope genus spider. There was some iNaturalist/bugguide.net debate about the specific identity of this beauty, seen this past weekend on the NY/CT border at the home of friends. There were a lot of spiders, and much else. In fact, the family is cataloging lifeforms around the property (1,200+ observations on iNaturalist; hundreds of species), which is blessed with meadow, pond, and woods in short compass. You know what else is great: the kids are in on the safaris. The six-year-old is already a marvelous natural historian, the twin two-year-olds are coming up fast. A couple of neighborhood children joined us as well on Saturday. Readers probably are aware of the thesis of Richard Louv’s Last Child in the Woods. “Nature-deficit disorder” and “leave no child inside,” and don’t forget the meadows! Sure, sometimes it bites (see yesterday), but can there be any doubt that a million years of evolution and childhood development has some precedent over a couple of decades of digitally influenced brain formation?Fingernail for scale here. I’ve never seen such enormous spider egg cases.

Spider Update

On Wednesday, Araneus diadematus ate brunch.

Judging from the size and shape of the mummified-in-silk prey, I’d say it was a fly. The temperature was already near 50 that morning and would rise up to 60 in the afternoon. Diptera weather! There were also two gnats stuck to the web, but these were so small they hardly seemed worth the effort to eat after all the juices sucked out of the big fly.Which was reduced over a few hours to a gnarly ball of gristle.

In three months of sporadic observation, we’ve only seen this spider eat once.


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