Receptor for the neuropeptide CCHamide-2. Highly expressed in larval brain (PubMed:24098432, PubMed:26020940). Also highly expressed in adult brain with very low levels in larval and adult gut (PubMed:24098432). Very low expression in eggs. Expression increases during the first and second instar larval stages, decreases in the third instar larval stage, increases again in pupae and decreases slightly in adults. Reduced levels of insulin-like peptide Ilp5 mRNA, reduced secretion of Ilp2 and Ilp5 proteins in mid-L3 larvae, growth defects and developmental delay during larval stages. Belongs to the G-protein coupled receptor 1 family.