Gravid vinegaroon?

[emlicht]

Hello! Just picked this little one up at a pet store-was on sale due to their tail being broken off-but I’m worried it could be gravid? Is it that likely? I know most likely I’ll have to just wait! Putting her in an enclosure with 6inches of substrate and plenty of cork and leaves to burrow under and going to leave her be. I’ve only had one vinegaroon previously and she never looked this round.

 

[Wolfram1]

its fat

likely wild caught since noone is breeding them really, so possibly gravid, but only if it is female

you'd have to check its underside for epiandrous fussilae to be certain

hard to do without magnification and experience

 

[TheraMygale]

Vinegaroon from Reptile Expo

I feel very lucky to live in Tucson, as we have all sorts of fun things happening down here. I get rocks at the gem show every year to spruce up my tank decor, and I get to go looking for interesting bugs at the Reptile Expo. This was the first year I went, and I narrowly avoided getting a specta...

beetleforum.net

Has some nice sexing photos to help you.

its fat

likely wild caught since noone is breeding them really, so possibly gravid, but only if it is female

you'd have to check its underside for epiandrous fussilae to be certain

hard to do without magnification and experience

since i am not interested in owning one, i had no idea no one was breeding them. Its good to know for general knowledge. I like to be aware of everything i can in the invert world.

it pays to know this if one ever decides to go and buy one.

 

[birbyborb]

This is an immature Mastigoproctus, likely penultimate or the instar before, which cannot be sexed until reaching maturity. Ensure it has a deep, burrowable, and moist substrate and you'll have a vinegaroon nearly twice the size it is now, eventually! And the tail will grow back, at least partially, since it is immature.

its fat

likely wild caught since noone is breeding them really, so possibly gravid, but only if it is female

you'd have to check its underside for epiandrous fussilae to be certain

hard to do without magnification and experience

Just for future reference, vinegaroons don't have epiandrous fusillae. Mastigoproctus are easy to sex with a glance at the pedipalps once mature, but this one is immature and thus cannot be sexed until it reaches maturity. Immatures appear female regardless of sex.

 

[Wolfram1]

Just for future reference, vinegaroons don't have epiandrous fusillae. Mastigoproctus are easy to sex with a glance at the pedipalps once mature, but this one is immature and thus cannot be sexed until it reaches maturity. Immatures appear female regardless of sex.

are you sure, i thought they do, at least Amblypygi can be sexed that way as well
anyway my bad, i apologize, i have no real experience with vinegaroons, good to have your input

 

[birbyborb]

are you sure, i thought they do, at least Amblypygi can be sexed that way as well
anyway my bad, i apologize, i have no real experience with vinegaroons, good to have your input

I’m certain. Amblypygi also don’t have epiandrous fusillae, but for some species (I think especially those of the genus Damon, but I’m not sure if it’s exclusive to or all encompassing of that genus), the females have reddish setae on the genital plate, which can be used for sexing. Epiandrous fusillae are silk spinning organs for creating sperm webs, so they are exclusive to male spiders.

 

[Brewser]

Welcome To A Boards
Many thanks to You for Rescuing and Rehabilitating.
Am sure it will be well worth your while and a rewarding relationship.
Salute,

 

[ocelotti]

I don't have much experience with arachnids (and none with vinegaroons), but my amblypygi had a really fat opisthosoma like this before it molted. Post-molt, and it's now very flat. That, plus your vinegaroon's kinda dull colour makes me think that it might just be approaching a molt.