Some stridulating organs (hissy bits)

[Otis Driftwood]

P. irminia

Prolateral maxilla


Retrolateral chelicerae

[M.F.Bagaturov]

Hi Otis!

First, thank You very much for Your permission!
Second, thank You very much for another great foto!
And as for Your question as far as I knew ALL species of genus Brachypelma had stridulating apparatus which is situated on trochanter and lower surface of femur of leg I.
So, as for the paper You have reffered I haven't time to read it and check but it is can be reached here (the key), so anybody can check: http://tarantulas.tropica.ru/en/evolution/Theraphosinae
I see also, there's something wrong with this...
khm...

[Otis Driftwood]

As luck would have it i have found a B. emilia skin in an empty cricket tub with a few other skins but now i am really confused. As far as i can see there does not appear to be anything that i would consider as stridulatory setae on the trochanter or femur of the palp , leg 1 or leg 2?

Retrolateral trochanter of palp


Retrolateral femur of palp


Prolateral trochanter of leg 1


Prolateral femur of leg 1


Retrolateral trochanter of leg 1


Retrolateral femur of leg 1


Prolateral trochanter of leg 2


Prolateral femur of leg 2



By the way for anyone that is interested the paper that i was referring to can be downloaded here http://entomologia.fcien.edu.uy/Myga...iles_et_al.pdf and the data matrix i mentioned is on page 5 and so if emilia is the only Brachypelma species examined then that explains the fault with character 21.

[M.F.Bagaturov]

Hi Otis!

I see You point. I believe it is better to discuss with Stuart Longhorn if he wish... I refered on my site of the Smiths's papers on diagnosis of Brachypelma genus.
But looking the fotos I see the differense between Retrolateral femur of leg 1
and Retrolateral femur of leg 2. The brash seen in the first one is may be reffered as a "feathered setae". As far as I'm realise myself (maybe wrong) the american theraphosids doesn't typically has these "spikes" freely presented in asiatic theraphosids.

[Otis Driftwood]

Perhaps an email to Stuart Longhorn may be in order. I see what you mean about the setae but they are so soft and have too much give in them to produce any noise at all , i would have expected them to have at least a little stiffness to them.
Anyway back to 'proper' stridulating organs here is P. rufilata

Prolateral maxilla


Close up


Retrolateral chelicerae

[Otis Driftwood]

Ornithoctonus aureotibialis

Prolateral maxilla


Retrolateral chelicerae

[Wayne]

You know I'm wondering about my tarantulas.
I have yet to hear a peep out of any of them.
Great photos as usual.

[Otis Driftwood]

Haplopelma hainanum

Prolateral maxilla


Retrolateral chelicerae



Haplopelma minax

Prolateral maxilla


Retrolateral chelicerae


Cyriopagopus sp. blue (improved pics)

Prolateral maxilla


Retrolateral chelicerae

[Otis Driftwood]

P. metallica

Prolateral maxilla


Retrolateral chelicerae

[Otis Driftwood]

Haplopelma longipes

Prolateral maxilla


Retrolateral chelicerae



Selenocosmia peerboomi

Prolateral maxilla


Retrolateral chelicerae



Chilobrachys fimbriatus

Prolateral maxilla


Retrolateral chelicerae



Poecilotheria regalis (new and improved pics)

Prolateral maxilla


Retrolateral chelicerae

[TalonAWD]

My B. boehmei also stridulates every time he kicks hairs when annoyed. Has done it since it was very young. Its pretty loud too. It does sound like hissing. Its the only one that does this.

[Lord-Ozz]

ok this may sound cruel but is there a way to coax them to hiss, i have a cobalt and really want to see what it sounds like? or maybe someone has a vid or audio clip of a T hissing?

[TalonAWD]

Originally Posted by Lord-Ozz

ok this may sound cruel but is there a way to coax them to hiss, i have a cobalt and really want to see what it sounds like? or maybe someone has a vid or audio clip of a T hissing?

I have seen a video of one hissing on you tube.

[Wayne]

Never had one hiss !:Ts hocked::Ts ad:
Must be content or they don't find my presence menacing.
Hmm,
I could be deaf too never thought about that ....huh what did you say ?

[krislyn]

Originally Posted by Wayne

Never had one hiss !:Ts hocked::Ts ad:
Must be content or they don't find my presence menacing.
Hmm,
I could be deaf too never thought about that ....huh what did you say ?

lol deaf, yep that part of old age.