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Genus of spiders From Wikipedia, the free encyclopedia
Psalmopoeus is a genus of the family Theraphosidae containing various species of tarantulas. The genus is native to Trinidad and Tobago, Colombia, Ecuador, Venezuela, Guyana, Brazil, Belize, Panama, Nicaragua, Costa Rica, Mexico, Guatemala and Honduras. All of these tarantulas are arboreal in nature, Psalmopoeus victori being the first arboreal tarantula of Mexico.
Psalmopoeus | |
---|---|
Psalmopoeus irminia | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Subphylum: | Chelicerata |
Class: | Arachnida |
Order: | Araneae |
Infraorder: | Mygalomorphae |
Family: | Theraphosidae |
Genus: | Psalmopoeus Pocock, 1895[1] |
Type species | |
Psalmopoeus cambridgei Pocock, 1895 | |
Species | |
10, see text |
These species are believed to be relatively venomous, and research in the venom of P. cambridgei shows it to be similar to capsaicin, the molecule causing irritation in chilli peppers.[2] These molecules activate sensory cells to send pain signals to the brain. Genetic engineers are working on blocking the receptors that are activated by these molecules.[2]
The species of this genus can be distinguished from all others by the lyriform organ in the prolateral maxillae, composed of a singular row of thick hairlike bristles. They also own hairs on the base of the chelicerae, also having short hairs in the retrolateral side of the pedipalp trochanter and femur.[3]
As of July 2022[update], the World Spider Catalog accepted the following species:[1]
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