Help with my whipscorpion (vinegaroon) - immature or mature?

[spiniferlover]

Recently I bought a pair of whipscorpion (Hypoctonus siamensis), but there is a significant difference in size between female and male. Usually, in tarantulas and scorpions, female is larger than male, but in this case, the female is smaller than the male, so I am not sure if the female is fully mature adult or juvenile that have not yet fully grown. Here are some photos:

: Size comparison (left: female; right: male)


: female habitus


: female genital sternite

Is there anyone who can determine whether this female is mature or not? Also, I would like to check the original description of Hypoctonus siamensis to see the female size and shape of the genital. Is there any online links or homepages where I can read the literature?

 

[Scourge]

Can't help with the maturity question, but click here and you can open the original desciption - Haupt, J. (1996a)

 

[spiniferlover]

Can't help with the maturity question, but click here and you can open the original desciption - Haupt, J. (1996a)

Thank you for your help! According to the literature, it seems most likely to be T. dalyi or T. tarnanii. (Obviously, it is not Hypoctonus siamensis!) The male clearly resembles T. dalyi, but the shape of the female genital operculum (1st abdominal sternum) was different with the original description by Pocock (1900), , and more similar to T. tarnanii by Haupt's literature. Both individuals were collected from the same area, so maybe they are T. tarnanii? Here's the illustrations by Haupt:


a: Hypoctonus siamensis (Male)
b: Typopeltis dalyi (Male)
e: Typopeltis tarnanii (Male)


a: Hypoctonus siamensis (Female)
e: Typopeltis tarnanii (Female)

and this is the key to species of the male T. dalyi and T. tarnanii:

 

[spiniferlover]

...and this is the original descrption by Pocock (1900)

Male pedipalp:
Female 1st abdominal sternum:

 

[spiniferlover]

Live habitus of T. tarnanii by Delfosse (2008):

 

[CRX]

Vinegraroons are such interesting creatures, almost got like crab pincers lol

 

[Scourge]

Any chance of some close up photos of the male palps, against a light background?