title: Metamorphic changes in the neurosecretory cells of Diacrisia obliqua Walker (Lepidoptera: Arctiidae).
abstract: 4 PF-positive NSC appear for the first time in each brain hemisphere on 4th day of exclosion. B-, C- and D-cells appear in the pars intercerebralis region on the second day in the 2nd instar. 3 lateral NSC appear for the first time in this instar. 2 A4-cells appear in the tritocerebral region of the 4th instar. An increase in the number and size of the NSC is noted in the successive instars. A3-cells appear for the first time in 5th instar. The secretory phases in the pupal period are completed in three "stages" which last for 3.3 and 4 days respectively. Adults lack PF-positive cells in the lateral and tritocerebral regions. Females show accumulation of NSM before mating which depletes gradually as the mating time reaches.
mesh_terms: D000818:Animals; D005260:Female; D007814:Larva / Q000033:anatomy & histology; D007915:Lepidoptera / Q000033:anatomy & histology* / Q000502:physiology; D008297:Male; D008675:Metamorphosis, Biological; D008959:Models, Neurological; D009490:Neurosecretory Systems / Q000033:anatomy & histology* / Q000166:cytology; D011679:Pupa / Q000033:anatomy & histology; D012737:Sex Factors