Poecilotheria sp. sexual dimorphism?

[musihuto]

Hi,
quick question: are all poecilotheria species sexually dimorphic?

thanks! ​

- munis​

 

[Talkenlate04]

To me Ornata are not males are ugly all the time(in a good way)......... but that is just my though. Formosa are not, well not really........ Heck I don't know.

Regalis are....... I'll let someone else answer the rest because I have no clue what I am rambling about, Off to bed I go!

 

[Thoth]

To some extent yes, either with the folio striping in some species to coloration in others, where the males colors and patterns appear washed out or dull as compared to the females. But I believe most of these differences are not really apparent until they have some size on them.

Though I'm not sure if this holds true for P.metallica and P.tigrinawesselli

 

[musihuto]

oooh... i guess i should have mentioned "upon sexual maturity"..
e.g. i had a beautiful p. pederseni, which in one moult went from:

to:

so. i guess the question i'm getting at is, if a pokie gets to adult size and still looks identical to what it looked like before it moulted, is it safe to say its a female (i.e. for the genus poecilotheria)?

thanks!
- munis

 

[P. Novak]

Oh yeah thats a big change. It goes to show that sexual dimorphism is not 100% in all species.

 

[butch4skin]

Correct me if I'm wrong, but in the first picture(penultimate), had that been a female, the dark folio stripe should have already begun to fade at that size. The retention of that dark stripe in males is an example of sexual dimorphism, even before maturity.

 

[Talkenlate04]

Correct me if I'm wrong, but in the first picture(penultimate), had that been a female, the dark folio stripe should have already begun to fade at that size. The retention of that dark stripe in males is an example of sexual dimorphism, even before maturity.

I had to go look at my mating pair again just to make sure but yes, that first picture is a penultimate male. Female Pederseni have a solid white folio with light black/brown on the very edges of the white. This girl is maybe 4", so you make a great point. They are even before maturity. But it's a pretty drastic change when they do mature.
Like this.

 

[butch4skin]

Beautiful spider, I need some. I don't have any of the pokie's that don't develop the yellow warning bands. Damn.

 

[butch4skin]

Sorry to change the subject, but do rufilata also have yellow banding on legs 3 and 4?

 

[Talkenlate04]

Yep but not as bright as bright as Regalis. Here is my Adult female having a snack this evening.

 

[david goldsboro]

all pokie males are differant in colour to the females in some way some more than other's ,the males will start to look differant at around 2.5inch some smaller you mainly notice them differance when you have them in groups or have both sexes of the same size

 

[MindUtopia]

Does anyone know about P. metallica? I mean as far as differences prior to the maturing molt. Mine is probably about 4" now and I can't get a non-shredded molt to save my life so I've never been able to sex it.

 

[david goldsboro]

Does anyone know about P. metallica? I mean as far as differences prior to the maturing molt. Mine is probably about 4" now and I can't get a non-shredded molt to save my life so I've never been able to sex it.

post a ventral picture or compare it to this male of mine that not long since matured he is about 4 inch in this picture look where the arrow is pointing to females dont have that lump

 

[butch4skin]

I know I'm screwing this thread up, but are rufilata and metallica the only sp. to have yellow banding on legs 3 and 4? Did you say regalis did as well? I've never noticed it on regalis.

 

[Talkenlate04]

Oh the Regalis does big time. The yellow bands on Regalis is what they are known for.

 

[butch4skin]

I thought regalis only had yellow on legs 1 and 2.

 

[Talkenlate04]

My bad I missed that part. Yes just 1 and 2. pairs 3 and 4 are white. Well close to it at least.

 

[musihuto]

species with yellow banding: regalis, ornata, striata, fasciata, rufilata, a little bit: metallica
species without any yellow banding: subfusca, miranda, formosa, pederseni, smithi

i hope that's right!

cheers!
- munis

 

[butch4skin]

That's right, but I believe that only metallica and rufilata have yellow on legs 3 and 4. Someone with more expertise please confirm or deny.

 

[Tunedbeat]

P.met have the yellow rings on ever leg except for the palps.