Sporting a mottled grey and brown camouflage, holconia insignis is a robust hunter, adept at ambushing its prey. Unlike others who spin webs, this nocturnal arachnid prefers to roam in search of its quarry. Juveniles, particularly, display a voracious appetite for insects, which later adapts to include larger invertebrates as they grow. The imposing size of an adult is complimented by its unique methods of subduing prey, involving a quick pounce followed by an immobilizing venom injection.