FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term male genital primordium ID (Ontology) FBbt:00052053 (Fly Anatomy)
Definition Anterior region of the genital disc that derives from abdominal segment 9 (Keisman et al., 2001). By third instar stage, it constitutes the majority of the disc in the male, but a much smaller proportion in the female (Keisman et al., 2001). In males, it produces the majority of adult male genital structures, in the female it produces the parovaria (Keisman et al., 2001).[ FlyBase:FBrf0037847 FlyBase:FBrf0040174 FlyBase:FBrf0091028 FlyBase:FBrf0141451 ]
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abdominal segment 9
 |__larval abdominal segment 9_________
larval telson                          |
 |__larval abdominal segment 9_________|
imaginal disc                          |
 |__genital disc_______________________|
developing material anatomical entity  |
 |__primordium_________________________|
larval terminal segment                |
 |__larval abdominal segment 9_________|
                                       male genital primordium  11 rec.
                                        |__male genital primordium (female) 6 rec.
                                        |   |__presumptive female accessory gland 1 rec.
                                        |   |__presumptive seminal receptacle
                                        |__male genital primordium (male) 5 rec.
                                            |__presumptive aedeagus
                                            |__presumptive ejaculatory bulb
                                            |__presumptive ejaculatory duct
                                            |__presumptive epandrial ventral lobe
                                            |__presumptive epandrium
                                            |__presumptive hypandrium
                                            |__presumptive male accessory gland 5 rec.
                                            |__presumptive metathoracic phragma
                                            |__presumptive subepandrial sclerite
                                            |__presumptive surstylus
                                            |__presumptive vas deferens 1 rec.
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Is a primordium
Part of larval abdominal segment 9
genital disc
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