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ftorres · Posted: Wed Dec 31, 2008 1:30 am Post subject: ID PLease (Kev any idea?)

Hello ALl,
I would like to get this Black widow ID please.
Can anyone help???

She is from Peru (San Geronimo de Surco)

thanks

francisco
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Celeste · Posted: Wed Dec 31, 2008 7:54 am Post subject:

Wow! That is *spectacular*, Francisco! What a beauty! (Pretty good photo, too!)
_________________
"Tarantulas are friends, not food" (but I bet they taste pretty good with butter and lemon!)

balam · Posted: Wed Dec 31, 2008 9:04 am Post subject:

that is one beautiful specimen Francisco. Do u currently have this girl?
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God does not play at dice AE

What · Posted: Wed Dec 31, 2008 11:14 am Post subject:

For now all you can get is Latrodectus sp.

When it dies let me know... Ill take it off your hands and work to ID it a bit further(probably antheratus, corralinus, or variegatus).
_________________
- Kevin aka What
Oderint dum metuant
My photos

ftorres · Posted: Wed Dec 31, 2008 2:59 pm Post subject:

Hello All,
My friend took the picture and I unfortunatly don't own this beauty.

Keving do you have a link to Latrodectus sp of the world with localities/country of origen???

What species besides the ones you listed are described for Peru???

thanks

PS perhaps I can get some on the next Peru shipment, I will ask my friend about the possibilities.
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Steven · MOD - Greenthing General Joined: 03 Aug 2007 Posts: 1049

Hr glass pic would/could be a real help. There is some real distinction between some of the SA species, but dorsal patterns can be problematic for ID.

A guess...probably L. curacaviensis.

The following are indigenous to central and south America.

* Latrodectus antheratus, Paraguay, Argentina
* Latrodectus apicalis, Galapagos Islands
* Latrodectus corallinus, Argentina
* Latrodectus curacaviensis, Lesser Antilles, South America
* Latrodectus diaguita, Argentina
* Latrodectus mirabilis, Argentina
* Latrodectus quartus, Argentina
* Latrodectus variegatus, Chile and Argentina
_________________

jet trail in the sunset
a long way away
cutting 'cross the horizon
at the edge of the day
and it calls Jimmy
come fly away

but I've been
too long in the wasteland
too long in the wasteland
I believe I'll have to stay

yeah, I've been
too long in the wasteland
too long in the wasteland
I believe I'll have to stay
--James McMurtry

DeniseCasey · Joined: 08 Sep 2008 Posts: 607

Hey Frisco,

Based on what Steven said that it may possibly be a L. curacaviensis, I went ahead and found a photo online. What do you think?

clicky...

Edited by What.

Celeste · Posted: Wed Dec 31, 2008 7:20 pm Post subject:

I don't think so -- the red bands on the curacaviensis appear to go all the way around the abdomen and have a faint white or yellow outline, and the red markings on Francisco's don't. (Plus, Francisco's appears to be a deeper shade of red, but assessing that from online images isn't very reliable).
_________________
"Tarantulas are friends, not food" (but I bet they taste pretty good with butter and lemon!)

What · Posted: Wed Dec 31, 2008 8:32 pm Post subject:

Dorsal patterns on Latrodectus can vary widely within a species...

Hence pattern retaining hesps/hesps with no pattern.
_________________
- Kevin aka What
Oderint dum metuant
My photos

Steven · MOD - Greenthing General Joined: 03 Aug 2007 Posts: 1049

South American latros have crazy glasses ...seems from what Ive seen and read (not enough to come to conclusions..but...) hr glasses can be a good ID clue. Angular anvil shapes, diamond "cutouts", hr glass within an hr glass... shat like that.

as far as ID via pattern goes ...this example does look a lot like L.antheratus...when comparing it to a good marking rendering/diagram I have.

Anywho...I gotta go...time is running down...
but, YES! I would be very interested in any latrodectus from down that way.
Anything Sicariidae (loxos included Wink

) would probably open my wallet also.
I just dont want to get anymore FOR SURE dead-ends ...meaning...if theres no chance of breeding or gravid females, I dont really want to deal with em ...esp when it comes to widows.
_________________

jet trail in the sunset
a long way away
cutting 'cross the horizon
at the edge of the day
and it calls Jimmy
come fly away

but I've been
too long in the wasteland
too long in the wasteland
I believe I'll have to stay

yeah, I've been
too long in the wasteland
too long in the wasteland
I believe I'll have to stay
--James McMurtry

balam · Posted: Thu Jun 11, 2009 10:39 pm Post subject:

any development here?
_________________
God does not play at dice AE

balam · Posted: Sun Aug 02, 2009 10:35 pm Post subject:

I'm gonna venture to say the spider at 01:57 is the same sp. based solely on abdomen pattern, normally not conclusive with Latrodectus sp. but the patterns are almost the same.

http://videos.howstuffworks.com/d...s-relations-800-species-video.htm

There is a shot at 02:25 where you can see the double "E" (to me the very back of the abdomen looks as if there were two black "E's" facing each other) with the red coming in down the middle of the abdomen. The spider in Francisco's pic shows a similar pattern on the back -the lighting doesn't help much, but it sure looks just like it-.

The spider on the video also shows 3 red, thin saddles and a fourth with a middle-line coming down the back. The spider in Francisco's picture shows the fourth "saddle" with the red extending down the middle at the back of the abdomen, as well as two more saddles further up the abdomen. I'm guessing we can't see the last saddle due to the curvature of the spider's abdomen. (there is a great comparative shot at 02:20).

Also it mentions it was discovered in Argentina, which can mean a far greater distribution Smile

based on this I'd say it's a young Latrodectus antheratus.

Here ya go Smile

http://tolweb.org/Latrodectus_antheratus/93782
_________________
God does not play at dice AE

balam · Posted: Sun Aug 02, 2009 10:41 pm Post subject:

then again all the rest look the same ;P and at any rate, the Latro in the video is awesome Smile

_________________
God does not play at dice AE