The development of Malpighian tubules and associated structures inPhilosamia ricini (Lepidoptera, Saturnidae)


  • dagger;Zoology Department, Gorakhpur University, Gorakhpur (U. P.), India.


The morphology of the Malpighian tubules and associated structures in the larva and adult of Philosamia ricini Hutt has been described and an account has been given of the embryonic development of, and post-embryonic changes in, these structures. The proctodaeum is believed to be entirelyectodermal and so are the Malpighian tubules and the vesicles derived from it. The development of cryptonephric condition and its disappearance duringmetamorphosis have been worked out in detail. The pattern of growth and differentation of the Malpighian tubules in the larval instars has been studied.