At 6 and 18 hours APF, the volume of the distal tip region of the mushroom body dorsal lobes which is infiltrated by glial processes is decreased in animals expressing drprdsRNA.Scer\UAS.cAa under the control of Scer\GAL4repo compared to wild type. The number of glial lumps over 2 μM per mushroom body lobe is severely reduced in the mutants compared to wild type at these timepoints (these lumps are normally formed by glial processes that engulf clusters of varicosities on the axon branches).