Orphan receptor that binds DNA as a monomer to hormone response elements (HRE) containing an extended core motif half-site sequence 5'-AAGTCA-3' (PubMed:11977984). Acts as a transcriptional repressor (PubMed:11977984). In both females and males, functions downstream of tra2 to regulate the development and function of certain sex-specific abdominal neurons, and likely regulates the development and/or function of the nervous system that controls courtship behaviors involved in the recognition and response of adults to appropriate sexual partners (PubMed:9883729, PubMed:9023356, PubMed:11977984). In males, promotes abdominal motor neuronal innervation of the ventral muscles of abdominal segment 5 which is required for correct abdominal curling during copulation (PubMed:9883729, PubMed:9023356). In females, also promotes abdominal motor neuronal innervation but on the uterine muscles which is required for egg laying (PubMed:9883729, PubMed:9023356). In larvae, pupae and adults, expressed in small subsets of cells in the anterior region of the brain (PubMed:9883729). In pharate adult brains, expressed in around 20 large neurons located close to the antennal lobe and lateral protocerebral neurophils. Also expressed in a small cluster of cells located just below the chemosensory region of the antennal lobe and near the mechanosensory region of the antennal lobe and subesophageal neuropils (PubMed:9883729). Expressed throughout development and in adults. Belongs to the nuclear hormone receptor family. NR2 subfamily.