Heterometrus sexing

[Nikos]

Anyone know the pectine teeth count for male/female speciments of heterometrus sp.?

I have one un-ID heterometrus sp. that has 17 teeth.

Photos can be taken too if needed for either sexing or IDing it, so just ask what is needed.
Thanks

 

[errit]

I don't know exactly but if it has 17 then i would say its a female.

 

[Nikos]

I don't know exactly but if it has 17 then i would say its a female.

thanks for the reply, where is your answer based?
Do you have any paper, or personal experience?

 

[errit]

The pectine teeth differ in species. I dont know exactly how much heterometrus on average has. But i know that androctonus can have around thirty. considering the big difference i would say a female. because a female has lesser pectinal teeth.

 

[G. Carnell]

my male H.laoticus has 17 teeth, but its in a different sub-genus so not sure if it helps
http://www.freewebs.com/scorpionrealm/H.laoticus PECTINE SHOT.jpg

 

[fusion121]

you don't always have to know pectinal tooth counts, another good character for sexing seems to be the angle the pectines form with the basal piece, 90 degrees =male a larger angle is generally a female.

 

[Nikos]

I have another one of the same specie (h.wroughtoni) that has 16 teeth but I haven't check the pectine angle yet.

 

[G. Carnell]

hi,
prolly a male also
my male swamm has 15-16
and its closely related

P.Butels site says 13-17 for both sexes, so angle is probably mroe important

 

[Brak]

http://www.arachnopics.com/showphoto.php?photo=552&password=&sort=1&cat=500&page=1

This is a male H spinifer. The genital opening is triangular as opposed to the females that are oval. Another way to tell the sexes.

John

 

[Nikos]

Thanks everybody!
I'll check the pectine angle and the shape of the genital opening then.