another vinegaroon question for alex

krucz36 · 10-22-2002, 07:38 PM

hey man:
how does one go about sexing a vinegaroon? i have that M. giganteus, and i'd love to know what brand of bug it is.
thanks!

Alex S. · 10-22-2002, 09:21 PM

Hey Krucz, whats up. When is comes to Mastigoproctus the males usually have larger or thicker-looking pedipalps compared to body size. The females have smaller pedipalps compared to body size.

Heres some pics from the net to help:

Male:

http://www.utep.edu/museum/desertdia...vinegaroon.jpg

Female (gravid as well):

http://kellynewcomer.com/imagesnews/vinegaroon.jpg

Alex S.

atavuss · 10-22-2002, 10:37 PM

once a vinegaroon is mature are they like scorpions and never molt again?
will a vinegaroon regenerate lost appendages after a molt?
I bought a vinegaroon at the IRBA show recently and its abdomen was almost flat.....looked really neglected. thankfully it looks like it will make it as it is plumping up well after eating a few crickets and drinking plenty of water.
Ed

krucz36 · 10-22-2002, 10:38 PM

well, if that's a foolproof method, i've got a girl. the palps on the male are very impressive!
does that rule apply only to adults? which leads nicely into:
how can you tell if your vinegaroon is an adult?
thanks bud!

Alex S. · 10-23-2002, 12:02 AM

Quote:

Originally posted by atavuss
once a vinegaroon is mature are they like scorpions and never molt again?
will a vinegaroon regenerate lost appendages after a molt?
I bought a vinegaroon at the IRBA show recently and its abdomen was almost flat.....looked really neglected. thankfully it looks like it will make it as it is plumping up well after eating a few crickets and drinking plenty of water.
Ed

Hello, yes, once they hit adult hood they stop molting and they will regenerate limps through molts. Glad to hear you rescued and nourished the uropygid

Alex S.

Alex S. · 10-23-2002, 12:11 AM

Quote:

Originally posted by krucz36
well, if that's a foolproof method, i've got a girl. the palps on the male are very impressive!
does that rule apply only to adults? which leads nicely into:
how can you tell if your vinegaroon is an adult?
thanks bud!

Yeah, the pedipalp rule mainly applies to adult specimens as young are very similar and the pedipalps are very hard to tell apart at that age. A simple and the easiest way to tell if a uropygid is an adult is to know the full grown size of the species. In the case of Mastigoproctus giganteus adults are usually 2.5" to 3" in body length (excluding "whip"). So pretty much once a specimen has made it to around this mark and stops molting it is mature. Glad to help Krucz

Alex S.

krucz36 · 10-23-2002, 01:15 AM

"alex: the one-stop shop for uropygid knowledge."
thanks bro!

Wade · 10-23-2002, 10:54 AM

In a recent article in Reptiles Mag Art Evans mentions that adult males have a movable spine on the end of the pedipalps, apparently used to push the spermataphore into the female during mating.

I have not been able to discern this feature on any of my 3 adult specimens, but I suppose it's possible they're all female (or all male??). I wish there had been a picure of this structure! Based on pedipalp size, I'd say I have one male and two females. I'm temted to try breeding, but I really want to be sure of the sex. I also have 6 younger ones of various sizes.

Wade

krucz36 · 10-23-2002, 11:55 AM

does anyone else imagine wade's voice sounding like "fat tony" from the simpsons? damn avatars! thinking of tony saying "discern this feature" is disconcerting.

Wade · 10-23-2002, 02:23 PM

My wife has been most vocal on this topic..."What about the pretzel monies? When are you going to do something about the Pretzel monies?"

Fat Tony

krucz36 · 10-23-2002, 02:26 PM

"lips, louie...advance upon them..."

Wade · 10-23-2002, 02:58 PM

Garth-

You crack us so consistantly....up.

10-22-2002, 07:38 PM	#1
krucz36 Chelcirator Join Date: Aug 2002 Location: San Diego Posts: 296	another vinegaroon question for alex hey man: how does one go about sexing a vinegaroon? i have that M. giganteus, and i'd love to know what brand of bug it is. thanks! __________________ g - Fry: "Professor, I can't swallow that thing!" Professor Farnsworth: "Good news! It's a suppository!" -Futurama

10-22-2002, 09:21 PM	#2
Alex S. Arachnolord Join Date: Jul 2002 Posts: 646	Uropygi Sexing Hey Krucz, whats up. When is comes to Mastigoproctus the males usually have larger or thicker-looking pedipalps compared to body size. The females have smaller pedipalps compared to body size. Heres some pics from the net to help: Male: http://www.utep.edu/museum/desertdia...vinegaroon.jpg Female (gravid as well): http://kellynewcomer.com/imagesnews/vinegaroon.jpg Alex S.

10-22-2002, 10:38 PM	#4
krucz36 Chelcirator Join Date: Aug 2002 Location: San Diego Posts: 296	well, if that's a foolproof method, i've got a girl. the palps on the male are very impressive! does that rule apply only to adults? which leads nicely into: how can you tell if your vinegaroon is an adult? thanks bud! __________________ g - Fry: "Professor, I can't swallow that thing!" Professor Farnsworth: "Good news! It's a suppository!" -Futurama

10-23-2002, 01:15 AM	#7
krucz36 Chelcirator Join Date: Aug 2002 Location: San Diego Posts: 296	"alex: the one-stop shop for uropygid knowledge." thanks bro! __________________ g - Fry: "Professor, I can't swallow that thing!" Professor Farnsworth: "Good news! It's a suppository!" -Futurama

10-23-2002, 11:55 AM	#9
krucz36 Chelcirator Join Date: Aug 2002 Location: San Diego Posts: 296	does anyone else imagine wade's voice sounding like "fat tony" from the simpsons? damn avatars! thinking of tony saying "discern this feature" is disconcerting. __________________ g - Fry: "Professor, I can't swallow that thing!" Professor Farnsworth: "Good news! It's a suppository!" -Futurama

10-22-2002, 10:37 PM	#3
atavuss Arachnoprince Join Date: Aug 2002 Location: Stockton, California Posts: 1,028	once a vinegaroon is mature are they like scorpions and never molt again? will a vinegaroon regenerate lost appendages after a molt? I bought a vinegaroon at the IRBA show recently and its abdomen was almost flat.....looked really neglected. thankfully it looks like it will make it as it is plumping up well after eating a few crickets and drinking plenty of water. Ed

10-23-2002, 10:54 AM	#8
Wade Arachnoking Join Date: Aug 2002 Location: Richmond, Virginia Posts: 2,938	In a recent article in Reptiles Mag Art Evans mentions that adult males have a movable spine on the end of the pedipalps, apparently used to push the spermataphore into the female during mating. I have not been able to discern this feature on any of my 3 adult specimens, but I suppose it's possible they're all female (or all male??). I wish there had been a picure of this structure! Based on pedipalp size, I'd say I have one male and two females. I'm temted to try breeding, but I really want to be sure of the sex. I also have 6 younger ones of various sizes. Wade

10-23-2002, 02:23 PM	#10
Wade Arachnoking Join Date: Aug 2002 Location: Richmond, Virginia Posts: 2,938	My wife has been most vocal on this topic..."What about the pretzel monies? When are you going to do something about the Pretzel monies?" Fat Tony

10-23-2002, 02:26 PM	#11
krucz36 Chelcirator Join Date: Aug 2002 Location: San Diego Posts: 296	"lips, louie...advance upon them..." __________________ g - Fry: "Professor, I can't swallow that thing!" Professor Farnsworth: "Good news! It's a suppository!" -Futurama

10-23-2002, 02:58 PM	#12
Wade Arachnoking Join Date: Aug 2002 Location: Richmond, Virginia Posts: 2,938	Garth- You crack us so consistantly....up.

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