Giant Scale Insect

Life cycle
Females moult into the adult stage and crawl up above ground and onto vertical structures such as trees and fence posts. Males mate with the females at this stage, then the females crawl to a protected place such as under bark, or in a crevice, where they become immobile and appear essentially dead. At this stage the four posterior segments of the abdomen are retracted into the abdomen to form a large cavity ("marsupium"), with a posterior slit-like opening. The first instar nymphs ("crawlers") develop inside this marsupium in the dead leathery body of the mother, then emerge, dropping onto vegetation and soil. Mortality of these crawlers must be very high as 1,000 to 2,000 are produced per female. (from Australian Museum)