The genus has adults with large and characteristicoval shape and the body is densely covered in short hair. The head behind the eye narrows slightly and the eyes are at a distance from the fore edge of the pronotum. The edge of the pronotum is not extended to the sides or bent down. The metathoracic scent gland has an ostiole with a peritreme and a deep furrow. The sutures on the underside of the abdominal segments between 4 and 5; and between 5 and 6 are strongly curvedforwards. Many species may swarmseasonally on seeds of specific trees. Melamphaus faber is known to be found in large numbers on Hydnocarpus castaneus and H. wightiana in Singapore.