Heterometrus sp. from Thailand. Adult female looking gravid. Ideas as to species?

Collin Clary

Arachnobaron
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The pic clearly shows it's an adult and yes, Thailand in origin. Exact locality in Thailand is unknown.
If it clearly showed it was an adult, I wouldn't be asking you if you were certain. The proportions (narrow chelae and metasoma) of this particular animal are more in line with a subadult for the most common species in the pet trade (i.e., H. silenus). This could be simple intraspecific variation of course.

Most of the Heterometrus specimens in the hobby are H. silenus, and are typically from Vietnam regardless of the alleged country of origin.

The species found in mainland Thailand is H. laoticus, however I believe I can see granulation on the carapace/tergites which would rule out this species.

H. laevigatus can also be found in Thailand on the upper half of the Malay Peninsula. This species has entered the pet trade in small numbers in recent years, and is still fairly rare in the hobby. If you are certain the animal was collected in Thailand, then this is the most likely species.

H. thorelli is also be found in Thailand along the border with Myanmar, however this species is not in the pet trade.
 

xenesthis

Arachnobaron
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Thanks for the info! Wow a sub-adult! That means this species grows to quite a large size. Ruling out Vietnam export. Definitely Thailand. I'll have really good pics to post Wed. night or Thur. Can you rule out H. spinifer? I've seen H. laoticus before, so I lean on H. laeviagatus as the timing of the available specimens makes sense. My Malaysian H. spinifer have a very "glossy black" coloration, but these are "flat black".
 

Collin Clary

Arachnobaron
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Thanks for the info! Wow a sub-adult! That means this species grows to quite a large size. Ruling out Vietnam export. Definitely Thailand. I'll have really good pics to post Wed. night or Thur. Can you rule out H. spinifer? I've seen H. laoticus before, so I lean on H. laeviagatus as the timing of the available specimens makes sense. My Malaysian H. spinifer have a very "glossy black" coloration, but these are "flat black".
H. spinifer are really only found on peninsular Malaysia, so it's unlikely. Additionally, they have pale yellow/orange telsons as juveniles and are typically dark red as adults. I've attached images of a juvenile and an adult below.
 

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xenesthis

Arachnobaron
Old Timer
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556
H. spinifer are really only found on peninsular Malaysia, so it's unlikely. Additionally, they have pale yellow/orange telsons as juveniles and are typically dark red as adults. I've attached images of a juvenile and an adult below.
Thanks! I'll have good pics of these Thai locality scorpions Wed. or Thur. I'm looking for the black and white drawings by Kovarik showing the granulation details in this genus.
 

Edan bandoot

Arachnoprince
Active Member
Joined
Sep 5, 2019
Messages
1,593
If it clearly showed it was an adult, I wouldn't be asking you if you were certain. The proportions (narrow chelae and metasoma) of this particular animal are more in line with a subadult for the most common species in the pet trade (i.e., H. silenus). This could be simple intraspecific variation of course.

Most of the Heterometrus specimens in the hobby are H. silenus, and are typically from Vietnam regardless of the alleged country of origin.

The species found in mainland Thailand is H. laoticus, however I believe I can see granulation on the carapace/tergites which would rule out this species.

H. laevigatus can also be found in Thailand on the upper half of the Malay Peninsula. This species has entered the pet trade in small numbers in recent years, and is still fairly rare in the hobby. If you are certain the animal was collected in Thailand, then this is the most likely species.

H. thorelli is also be found in Thailand along the border with Myanmar, however this species is not in the pet trade.
I'd like to add that thorelli is present in the Asian hobby but has likely not been purposefully shipped to north America due to lack of demand.
 

Lots Of Legs Thailand

Arachnopeon
Joined
Jun 26, 2022
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1
Heterometrus sp. from Thailand. Adult female looking gravid. Ideas as to species?
View attachment 421829
May I ask where you got her from ? If you put her into a larger enclosure she will give birth tomorrow. I think she is one of ours from Uthai Thani we exported a shipment to USA around 1 month ago and 80% where gravid , picture attached is from the same breeding group
 

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