They hatch in about 1-2 months. Some mothers guard their egg cocoons in their silk-lined burrows. Newly hatched spiderlings can be very large and usually stay in the mother's burrow for a while before dispersing. Females are among the longest lived spiders, living for 20 years, some even 30 years. Females can take 8-10 years to reach maturity, and they moult every year or so.
Females can replace lost appendages as they moult.
The mygalomorphs seldom put up a fight and passively await their fate as the wasp creeps up and stings them in their soft abdomen. The wasp may entice a spider out of its burrow by tapping at the entrance but does not hesitate to enter the spider's underground burrow. Often the mygalomorph is already gone, out of an emergency exit. Outside, the spider sits motionless while the wasp searches frantically for it. Apparently, the wasp homes in on the spider's pheromones, harder to detect in the open.