The male emerges from its burrow at sunset and then again near dawn. A male tries to maintain contact with the female, and if she pulls away, he will actively pursue her.
Males have two specialized claws that are shaped like syringes on the ends of its two pedipalps. Male A. chalcodes weave a purse to hold the sperm, which he then loads into the specialized claws. Females have two pouches on the abdomen that are designed to hold the sperm sacks. Sperm sacs can be stored for weeks or months in the female's abdomen until she is ready to lay her eggs. As a female lays her eggs, she bathes each egg in the sperm (Miller, 1988). She weaves a silken sheet and lays up to 1,000 eggs on it. After laying all her eggs, she weaves another sheet, covers the eggs, and then seals the edges. After making this egg sac, a female carries it up to the edge of her burrow to warm it in the sun. Females guard their egg sac until the eggs hatch in up to 7 weeks (Miller, 1988). Three to six days after hatching, the young leave the nest and venture out on their own.
Breeding season: June through December
Range number of offspring: 100 to 1000.
Average number of offspring: 600.
Average gestation period: 7 weeks.
Range : 3 to 6 days.
Range time to independence: 3 to 6 days.
Range age at sexual or reproductive maturity (female): 8 to 10 years.
Range age at sexual or reproductive maturity (male): 8 to 10 years.
Key Reproductive Features: iteroparous ; sexual ; fertilization (External ); oviparous ; sperm-storing
Females care for their offspring in a number of ways. In addition to making a safe place for the eggs to hatch, and provisioning those eggs with nutrients, females actively help the eggs incubate by keeping them warm in the sun. Presumably, the female provides protection for the young spiderlings as they live in and around her burrow until they are three to six days old.
Parental Investment: precocial ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Protecting: Female)
- Miller, G. 1988. Texas Monthly Field Guide to Wildlife in Texas and the Southwest. Austin, Texas: Texas Monthly Press.