Centruroides Thread

[Ythier]

I think too, but.........
I don't think to C.limbatus, and I don't know what does C.nigrimanus looks like...
Did you count rows of granules on tibia finger ?

 

[Kaos]

I have two of the same spp. and I have counted seven :? Also the adult female of this spp. is 5-6 cm. isn't C. margaritatus supposed to be bigger?

 

[Ythier]

I have two of the same spp. and I have counted seven :?

Seven ? Did not you forget one ? :?

Also the adult female of this spp. is 5-6 cm. isn't C. margaritatus supposed to be bigger?

I got some adult males and females magaritatus...of 4 cm !! I thought that they were still young, but they did not want to molt, and some of them did not want to eat (the males), so I put them together...and they mate...and they make babies
The species was margaritatus for sure, the mother of these little specimens was quite big (about 8cm). Size seems to be very variable in C.margaritatus...and perhaps other spp, because I have currently a little C.gracilis (also about 4cm), very thin, with a long and thin metasoma, and which did not want to eat...perhaps a little male ?

 

[Nikos]

No I haven't Eric.
I don't have a microscope or a scanner so I can only take photos with my camera and then try to count them which is not very workable nor entertaining....

 

[Nazgul]

...Probabely the females will molt one more time and will develope bulbous chelae as well...

Hi,

one of the females molted one more time and indeed developed very bulbous chelae. It´s huge now like C. margaritatus females. And a lot of other morphological characteristics lead to C. margaritatus as well. Here´s a pic of an adulte male and the more or less freshly molted female. The female is a lot bigger than the male.

Greetings
Alex

 

[smalltime]

Yes Alex, that does look like a margaritatus to me aswell....

When I compare it to the picture ffrom Kovarik's book, Stiri, the bulbous part of the pincher is bigger than that portrait as bicolor. Also that part seems to have a less granule surface and/or ridge....

All aside though....PRETTY!!!

I'm glad I bought these anyways....

 

[fusion121]

Very pretty, I wonder whether the C.nigrimanus on the market are just the same morph of C. margaritatus mislabled.

 

[Ythier]

good pics Alex, so it's margaritatus for sure now

 

[smalltime]

Very pretty, I wonder whether the C.nigrimanus on the market are just the same morph of C. margaritatus mislabled.

Yes I think Alex had some aswell....

 

[Nazgul]

Hi,

yes, I do have some of those C. "nigrimanus". They weren´t really determined by the way. I talked to the guy who first bred them. A year ago a lot of Centruroides spp had been imported to Germany. Most of them turned out to be C. gracilis and C. margaritatus (at least the ones I´ve seen). The guy bought some and a he determined one pair as C. nigrimanus just because of their unusual colouration. He only used pictures he found on the net. So it´s maybe just C. margaritatus or C. gracilis again. My specimens are still too small to be examined in detail but due to the colouration it´s definitely not the same morph as the bicolor-margaritatus. I´ll post some pics after their next molts.

Greetings
Alex

 

[fusion121]

I'd be interested to see

 

[Ythier]

Of course, when the seller is not able to ID his scorpions...he will sell better a Centruroides "nigrimanus" or "bicolor" than a "margaritatus from Honduras or Costa-Rica"...

 

[fusion121]

Of course, when the seller is not able to ID his scorpions...he will sell better a Centruroides "nigrimanus" or "bicolor" than a "margaritatus from Honduras or Costa-Rica"...

Yes , thats why I haven't brought any of the nigrimanus I've seen for sale, I was sure they would be the same morph of margaritatus as the C. bicolor.

 

[G. Carnell]

Hi,

one of the females molted one more time and indeed developed very bulbous chelae. It´s huge now like C. margaritatus females. And a lot of other morphological characteristics lead to C. margaritatus as well. Here´s a pic of an adulte male and the more or less freshly molted female. The female is a lot bigger than the male.

Greetings
Alex

that male is more appealing than all Tityus species i have ever seen on the net, wicked scorp!

 

[fusion121]

The last of my C. margaritatus (bicolor morph) just moulted to 5th instar, this is a female too, it looks a bit different to yours Alex.

 

[Nazgul]

Hi,

some of males are coloured very similar and this one looks definitely like a male to me due to the thin metasoma segments. Also 5. instar would mean it only took 4 molts to adulthood. Are you sure?

I think my specimens were in 2. and 3. instar when I got them. I´ve got 5 adult males by now, 3 of them molted 3 times in my possession and 2 of them 4 times. Furtheron I´ve got one adult female which molted 4 times and 3 subadult specimens of which 2 molted 3 times and one 4 times. All of the adult males are having 30 pectinal teeth. The adult female and the subadult ones are having 27 - 29 pectinal teeth. Therefor and because of the longer period of post-embryonal development (the last male molted to maturity in the beginning of February) I´m expecting all 3 of them to turn out to be females. This would mean of 4 females 3 molted 4 times and one 5 times. Assuming that I got the scorplings in 2. and 3. instar I guess males are reaching maturity in 6. instar and females in 7. instar. That´s very likely cause that´s the way in many other Centruroides spp as well.

Greetings
Alex

 

[Ythier]

...Dr Alex : "C.margaritatus specialist" :clap:

 

[fusion121]

Hi,

some of males are coloured very similar and this one looks definitely like a male to me due to the thin metasoma segments. Also 5. instar would mean it only took 4 molts to adulthood. Are you sure?

I think my specimens were in 2. and 3. instar when I got them. I´ve got 5 adult males by now, 3 of them molted 3 times in my possession and 2 of them 4 times. Furtheron I´ve got one adult female which molted 4 times and 3 subadult specimens of which 2 molted 3 times and one 4 times. All of the adult males are having 30 pectinal teeth. The adult female and the subadult ones are having 27 - 29 pectinal teeth. Therefor and because of the longer period of post-embryonal development (the last male molted to maturity in the beginning of February) I´m expecting all 3 of them to turn out to be females. This would mean of 4 females 3 molted 4 times and one 5 times. Assuming that I got the scorplings in 2. and 3. instar I guess males are reaching maturity in 6. instar and females in 7. instar. That´s very likely cause that´s the way in many other Centruroides spp as well.

Greetings
Alex

Hi
It could well be a male, as I haven't done a pectinal tooth count, I assumed it was female as its metasoma seemed shorter in comparison to some of the others. I'm pretty sure its 5th instar, problem is I don't know for sure that it was 2nd instar when I got it, going on it size I'm relatively confidant it was. I'm expecting it will moult again as its still small for an adult Centruroides. Thanks for the pectine counts .

 

[Nikos]

Here ar some photos from a freind of mine who is 99% sure that these are c.nigrimanus.
The speciments originate from Honduras.
The photos belong to Marc Fergin.

Please share your thoughts about them.

 

[Nazgul]

Hi,

my opinion is

1. it is impossible to ID Centruroides spp just by pictures (if the pics aren´t detaild macro shots of certain parts)
2. I know for sure that the guy who took the pics just determined his specimens by using pictures on the net (cause he told me). Therefor I´m not so sure about the correct determination.

@fusion: Your specimens on the picture seems to be subadult otherwise the chelae would be more bulbous. If it´s really 5. instar it should be definitely a female as they are reaching maturity in 6. instar. It should develope a bigger metasoma and more bulbous chelae after the next molt. My guess that it´s a male should be wrong then.

Greetings
Alex