What is the primary physical defense mechanism utilized by *Aphonopelma seemanni*?

Kicking barbed urticating hairs from the abdomen

The most notable defensive structure equipping *Aphonopelma seemanni*, shared with many New World tarantulas, is the specialized urticating hairs situated on the abdomen. When the spider perceives a threat, it employs rapid movements of its hind legs to brush or kick these barbed hairs toward the aggressor. This physical irritant defense is highly successful and represents an evolutionary path that prioritizes this mechanism over developing extremely potent venom for defense against larger creatures, a trait more frequently observed in Old World species. This defense is utilized against terrestrial predators encountered on the jungle floor, contrasting with the primary function of the venom, which is focused on subduing prey.