Receptor for two functionally unrelated ligands; SP (A70A) for controlling reproductive behaviors and MIP for controlling sleep behavior (PubMed:18066048, PubMed:20458515, PubMed:20308537, PubMed:24089336, PubMed:25333796). MIP-SPR pathway functions as a sleep homeostat which perceives the need for sleep and stabilizes it by providing a slow-acting inhibitory input to the fly arousal system that involve the pigment dispersing factor (pdf) neurons (PubMed:25333796). SP-SPR is one of the multiple SP pathways that induce female post-mating behavioral responses (PMR) such as the suppression of mating receptivity and initiation of egg laying (PubMed:18066048, PubMed:24089336). The PMR switch is achieved by mediating the synaptic output of neurons such as those expressing fruitless (fru), double sex (dsx) and pickpocket (ppk) (PubMed:18066048, PubMed:24089336). In the female, expressed in the reproductive organs; strongly expressed in the spermathecae and the lower oviduct (PubMed:18066048). No expression in the male reproductive organs (PubMed:18066048). In the central nervous system of both sexes, it is expressed in the brain and ventral nerve cord (VNC); strongly expressed in the ventral regions of the suboesophageal ganglion, the cervical connective and in many nerve roots of the brain and VNC (PubMed:18066048, PubMed:25333796). Expressed in the s-LNvs and l-LNvs pdf neurons (at protein level) (PubMed:25333796). Expressed throughout development. Highest expression is in the embryos. Fully viable without obvious effects in the nervous system or reproductive organs (PubMed:18066048). Sperm transfer and storage in the females is not affected and egg fertilization and development is normal (PubMed:18066048). However, females lay fewer eggs, mate again at high frequency and do not reject a second male after mating (PubMed:18066048). Male and female flies display reduced overall sleep duration associated with shorter sleep-bout lengths, although the number of sleep-bouts is not affected (PubMed:25333796). Sleep recovery following sleep deprivation is also impaired (PubMed:25333796). Belongs to the G-protein coupled receptor 1 family.