State Size Features
Larva Up to 12 mm, whitish caterpillar, slightly pinkish or greenish, with a brown head.
Adult 15-20 mm, anterior wings with the first third yellowish white and the rest brown copper.
Duration (d) 30 (at 30ºC)
Symptoms / Damage
The larvae are introduced into the interior of the grain where they practice galleries. The greatest damage occurs in flours, which are contaminated by the simple presence of droppings, exuvia, and silk residues, causing the commercial depreciation of the product.
The large amount of fabric that the caterpillars segregate when they move covers the surface of the product and can even clog the processing machinery in storage.
The placement of pheromone polilleros allows to follow the populations and determine the opportune moment of the possible treatments.
The ventilation of stored products is very important, in order to avoid increases in humidity or temperature. Below 10ºC Plodia interpunctella stops its development.