Observations on the Life Histories of Acrophylla tessellata Gray and Extatosoma tiaratum Macleay (Phasmida)

By Katherine Korboot, B.Sc.

University of Queensland Papers Department of Entomology, 1(2): 161-69, 24th August, 1961.

Records observations, extending over two years, on the life histories of A. tessellata and E. tiaratum bred in captivity from eggs laid in the laboratory in January, 1959, by mated females. In both species the incubation period ranged from eight to twenty months. In the development of both male and female A. tessellata each of the six nymphal stadia was approximately fourteen days. For E. tiaratum there were six nymphal stadia for the female, and five for the male. In the case of females of E. tiaratum bred from eggs with an incubation of eight and nineteen months, the duration of each stadium was approximately nineteen days and twenty-four days respectively. Male nymphal stadia were slightly longer than those of the female.


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