In insects, FMRFamide and related peptides have modulatory actions at skeletal neuromuscular junctions, and peptides that are immunologically related to FMRFamide are released into the circulation from neurohemal organs. This precursor includes 10 peptides that have FMRF or related sequences at their C-termini. Belongs to the FARP (FMRFamide related peptide) family.