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PaulFurman

Joined: 24 Oct 2009 Posts: 595 Location: SF, CA, USA
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Posted: Sat Aug 28, 2010 12:39 pm Post subject: Funnel web making 'brown widow' spider |
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I spent considerable time trying to ID this over at bugguide.net without luck. It looks a lot like some Steatoda but there are many and none seem to make funnel webs. Oh well, maybe it'll help Ken with the arachnophobia desensitiztion thing. I thought I was OK with that but this one really gave me the creeps! I had to knock it out of the plastic pot where it had set up a funnel in and I think that set the mood. There was an egg sac in the nest and (the other guy) opened that up revealing about 50 eggs. As he poured the 1.2mm eggs out into a plastic box, they bounced like little hard marbles!
V/C 125mm APO Macro at about 1x, hand held stacks of several each and the eggs are a stack of 180 with the JML at 6.5x, a very challenging stack because of the subtle white textures, contrast has been maxed out in post.
PS, I need to experiment with some sort of diffuser for this full sun shooting... like a frosted plastic milk jug umbrella or something like that. I've resisted getting into flash.
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Ken Ramos

Joined: 27 Jul 2006 Posts: 7078 Location: lat=35.4005&lon=-81.9841
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Posted: Sat Aug 28, 2010 12:51 pm Post subject: |
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These are the spiders that really give me the creeps. Long spindly legs, shiny, no hair and big fat abdomens. But of course, that could describe a number of spiders. Just the same, "creepy!" Great shots of an interesting subject. I have read that they are probably more potent than our Black Widows, I don't know.  |
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PaulFurman

Joined: 24 Oct 2009 Posts: 595 Location: SF, CA, USA
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Posted: Sat Aug 28, 2010 1:01 pm Post subject: |
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The eggs haven't hatched yet. Would you like me to mail them to you to test that? actually I think I may have suffocated them in the fairly tight fitting clear plastic box... I certainly didn't want to leave it open though. |
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DQE

Joined: 08 Jul 2008 Posts: 1653 Location: near Portland, Maine, USA
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Posted: Sun Aug 29, 2010 12:44 pm Post subject: |
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Interesting photos.
It's the 2-3 inch black ones that can move VERY fast that still bother me a lot. Instant panic if my wife's pet basement spider suddenly runs across the basement floor towards me, even though it is harmless to people (non-venomous to humans).
I've pretty much gotten desensitized to most others, although we really don't have many poisonous ones in Maine where I live. I am very at ease with the jumpers since they don't seem to be harmful to people and they are so cute in their body language and appearance. My wife even catches flies, etc, to feed them. If she jiggles a dead fly the jumpers will usually eat it, as do the orb weavers (a web-based spider).
When I first began taking macros of jumpers, I could only do it if my wife spotted for me and warned me when a jumper leaped onto my camera (or hair). She'd then try to brush it off of me back onto its environment.
Since then I have become fully desensitized to jumpers and simply lower my head near a flower or bush and let them jump back onto familiar surroundings. I've been amazed at their vision - they have spotted me through a glass outer "storm door" from 4-6 feet away, just by me suddenly appearing the the door and looking out at a wooden walkway handrail where they regularly hunt.
The biggest problem we have now, other than keeping our indoor cats from eating spiders that stray into our house, is in having to watch them catch and eat bumblebees on the flowers we have on our (outdoor) deck. My wife couldn't bear to see her "furry bumblebees" regularly being killed through the sliding glass doors to our deck and gently moved an orb web type of spider to a set of nearby but out-of-sight bushes away from the deck. That way, we sanitized our insect viewing experience.
I have no credible justification for being willing to kill flies to feed jumpers and other spiders but not wanting to see bumblebees killed by the same or similar spiders.
As Rodney King once said, in a different set of circumstances, "Can't we all just get along?" Not sure he would want his words applied to these little animals, though! _________________ -Phil
"Diffraction never sleeps" |
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Ken Ramos

Joined: 27 Jul 2006 Posts: 7078 Location: lat=35.4005&lon=-81.9841
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Posted: Sun Aug 29, 2010 2:14 pm Post subject: |
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PaulFurman wrote: | The eggs haven't hatched yet. Would you like me to mail them to you to test that? actually I think I may have suffocated them in the fairly tight fitting clear plastic box... I certainly didn't want to leave it open though. |
Uh...er...em...no, that will not be necessary, if the written word says so, I will take it as being that which it is.  |
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Tesselator

Joined: 27 Mar 2010 Posts: 388 Location: Japan
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Posted: Sun Aug 29, 2010 3:33 pm Post subject: |
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Very cool (if not a little scary) photos man. Good job! |
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PaulFurman

Joined: 24 Oct 2009 Posts: 595 Location: SF, CA, USA
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Posted: Sun Sep 05, 2010 10:55 am Post subject: |
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Ugh, they hatched!
Stack of 242 frames and the dang thing moved! I thought it was dead, I forgot about these eggs and they must have hatched a couple days ago, after 2 weeks. The whole thing really creeped me out which is probably why I didn't check them often enough. The next day, they have not walked away but are still moving a little when nudged. Ack!
5 micron steps with Nikon CF N Plan 10x 0.30 160/0.17 at ISO 200, 1 sec on D700, 9.5x magnification: 3.8mm wide frame, 1.2mm deep.
Walter Piorkowski has done some fantastic shots of the whole life cycle over in the microscopy section: http://www.photomacrography.net/forum/viewtopic.php?t=10572 |
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PaulFurman

Joined: 24 Oct 2009 Posts: 595 Location: SF, CA, USA
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Harold Gough
Joined: 09 Mar 2008 Posts: 5787 Location: Reading, Berkshire, England
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Posted: Mon Sep 06, 2010 11:15 am Post subject: Re: Funnel web making 'brown widow' spider |
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PaulFurman wrote: | I spent considerable time trying to ID this over at bugguide.net without luck. It looks a lot like some Steatoda but there are many and none seem to make funnel webs. |
Yes, it looks very much like our British S. triangulosa, whose web catches mostly ants at ground level. Their webs are classified as cobwebs but I wouldn't know where the division between funnel webs and cobwebs might lie.
Harold _________________ My images are a medium for sharing some of my experiences: they are not me. |
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orionmystery

Joined: 29 Jul 2008 Posts: 1323 Location: Malaysia
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Posted: Mon Sep 06, 2010 6:55 pm Post subject: |
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Very nice set. I really like the eggs and the spiderlings  _________________ Kurt
Best of 2014 |
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