Abdominal gland Aggregation pheromones Alarm cue Alarm pheromones Allomones Anal gland secretions Anal sacs Attractants Brachial gland compounds Brain Brood pheromones Castor sacs Chest gland secretions Contact pheromones Contact sex pheromones Copulation release pheromones Cuticle Cuticular hydrocarbons Cuvierian organ Defense substances Dorsal gland Duvernoy’s secretion Eggs Epilithic lichens extracts Epiphytic lichens extracts Estrous mucus Estrus urine Extracts Femoral gland Fish oil Frass volatiles Harderian gland Headspace volatile Hypobranchial gland Kairomones Labial gland Limb nerves Lipid extractions Lipids Marking fluids Marking pheromones Mating behavior Microsatellite loci Migratory pheromones Mollusk Musk gland Oviposition aggregation pheromones Parotoid gland Parotoid macrogland Perineal scent gland Pigments Plasma Posterior salivary gland Postovulatory prostaglandin pheromones Preovulatory steroid pheromones Primer pheromones Recognition pheromones Recruitment pheromones Releaser sex pheromones Repellents Retinue pheromones Saliva compounds Salivary gland Scent glands Scent marks Sex pheromones Silk Skin extracts Skin glands Skin lipids Skin odors Sperm-release pheromone Sternal gland secretions Steroids Surface hydrocarbons Synomones Terrestrial lichens extracts Tibial gland Tissue Trail pheromones Urinary compounds Venoms Ventral scent marking gland Viscera Warning odor Wings