An international team led by the University of Turku has identified four new tarantula species from the Arabian Peninsula and the Horn of Africa, establishing a new genus named Satyrex. These spiders are so distinct in structure and genetics that they could not be classified in existing groups.
The name Satyrex combines “Satyr,” a mythological figure known for exaggerated features, and “rex,” Latin for king — a nod to the males’ exceptionally long palps, or mating organs. In Satyrex ferox, the largest species, the male palp can measure up to 5 cm, nearly four times the length of the spider’s front body section. Researchers believe this adaptation allows males to maintain a safer distance from aggressive females during mating, reducing the risk of attack.
The study, published in ZooKeys, also describes species named S. arabicus, S. somalicus, and S. speciosus, each reflecting their regional origins or notable coloration. All species in the genus are fossorial, living underground in burrows.
Source: University of Turku
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