In copulation, female superior and male go underneath.
Female has a long ovipositor for laying eggs into soil and walls of caves.
The eggs are probable parasitized by endemic wasps Archaeoteleia spp.
 After copulation females groom their ovipositor and antennae.
The gestation period of the eggs is unknown.
The nymph (first instar) of Pachyrhamma edwardsii is the size of a rice-grain, just after hatching from its egg.
They are light brown, orange, and beige color.
Their long slender legs show its beginning of adult coloration.
In copulation, female superior and male go underneath. Female has a long ovipositor for laying eggs into soil and walls of caves. The eggs are probable parasitized by endemic wasps Archaeoteleia spp.  After copulation females groom their ovipositor and antennae. The gestation period of the eggs is unknown. The nymph (first instar) of Pachyrhamma edwardsii is the size of a rice-grain, just after hatching from its egg. They are light brown, orange, and beige color. Their long slender legs show its beginning of adult coloration.
Pachyrhamma edwardsii