Probable receptor for neuropeptide ligand nlp-8 that plays a role in octopamine signaling and specifically, the octopamine inhibition of aversion responses in olfactory sensory neurons. Expressed in pharyngeal muscle and in AWC, ASG, ASE, ASI and ASJ sensory neurons. RNAi-mediated knockdown in AWC sensory neurons results in reduced octopamine inhibition of the aversive response to 100% 1-octanol. Belongs to the G-protein coupled receptor 1 family.