Are these spermathecae i'm seeing?

BrynWilliams

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Hey guys

Tiny obt moult was found today and i had to soap+water it just to get a view as it was properly crispy.

This was the best shot i could get and i think they're spermathecae i'm seeing, but granted the shot isn't great. Opinions?

 

dianedfisher

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Mar 14, 2007
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I think I can see a spermathecae. It's hard since it's not sclerotized yet and it's flattened , but you can see the bursa copulatrix. This is one of Craig McInnes drawings.
http://i53.photobucket.com/albums/g78/wraithspirit/spider bits/femaleorgans.jpg
I'm sure you've posted your pic on arachnophiles.uk and he can tell you I'm seeing things. {D I usually try to lift the spermatheca with a pin. If you can lift it and see the uterus externus you know you've got a girl, but it's hard to do it on small molts and when they're wet I can never get a photo cuase the weight of the water flattens them again.
Diane
 

BrynWilliams

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yeah this T's moult is about 2cm across, so I'm trying to get a jump on it :) also makes getting something small into/behind the uterus externus really hard :p

Thanks for the response though
 

jb62

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Jun 21, 2010
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My handheld microscope is 60x- 100x it shows hairs looking like thick needles lol..
I won't say about looking at t eyes ( but I was shocked ).

But is it good enough to sex a sling?.
 

BrynWilliams

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that would be plenty to sex moults. At best i'm achieving 5-10x at most with my setup. It's just all about lighting the subject correctly so you can see what you're looking for

My handheld microscope is 60x- 100x it shows hairs looking like thick needles lol..
I won't say about looking at t eyes ( but I was shocked ).

But is it good enough to sex a sling?.
 

Hellion299

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Nov 30, 2008
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Scope

Hummmm.......This is a neat picture...The scope I use ranges from 40x - 1000x but I have never had to use more then 100x to sex a molt even on my little 2" bugs. (Which is the size I like to wait to try an accurate sexing.) It's hard to tell but there does look to be spermathecae hiding there.
 

BrynWilliams

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thanks Nerri

Does look like what i think are spermathecae, first of my OBT slings to be sexed! Yay!

Oddly it's the fastest growing of the lot so far. That could just mean greedy.
 

mcluskyisms

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Apr 16, 2009
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Yeah, Id say its spermathecae developing in its infancy, as Craig mentioned on AP's you can see the beginnings of the bursa copulatrix also.
 

BrynWilliams

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cheers! yeah i posted these up on the same day :d just wanted to get a few opinions really :p


Yeah, Id say its spermathecae developing in its infancy, as Craig mentioned on AP's you can see the beginnings of the bursa copulatrix also.
 
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