Here are a few things of interrest; - The genera Heteroscodra , Psalmopoeus and Stromatopelma are members of the subfamily Aviculariinae - Lamarck, 1818
- Stromatoxin was first identified in the venom of the african tarantula Stromatopelma calceatum and is the defining characteristic seperating this species from the ones carrying Psalmotoxin.
- (Heteroscodratoxin-1 (also known as kappa-theraphototoxin hm1a or hmtx1) is a neurotoxin produced by the venom glands of Heteroscodra)

- The genera Psalmopoeus and Tapinauchenius do not have urticating hairs, unusual among new-world species.
- Aggressive behaviour of Psalmopoeus found in all old world species.

In my opinion Psalmopoeus hitched a ride from Africa, I think Heteroscodra and Stromatopelma came first...

Heteroscodra and Stromatopelma (along with Encyocratella) are members of the subfamily Stromatopelminae and lack stridulating organs. Psalmopoeus on the other hand flits between Aviculariinae and Selenocosmiinae depending on which taxonomist you listen to. The reason for its inclusion in Selenocosmiinae is mainly due to the paddle type stridulating organs on the prolateral maxillae which as you can see are very similar to other members of the Selenocosmiinae. So if anything it hitched a ride to South America from Asia rather than Africa.

P. irminia


P. cambridgei


Orphnaecus sp. Mambucal


C. fimbriatus

Told ya

Thanks MagDuke!