Lesser Meal Worm Beetle (Alphitobiusdiaperinus)
Adult lesser mealworms are up to 6 mm long, dark brown to black insects, with a distinctively dimpled thorax. The adults and larvae are often found in floor litter where they feed on poultry feed, dried bird droppings, and bird carcasses. Being a general scavenger, they can also be an occasional pest in stored products. In high numbers, in addition to being a vector for disease, the beetle can cause considerable structural damage as the larvae will often tunnel into polystyrene insulation material or even wooden beams and supports in order to pupate.
Meal Worm Beetle Removal
Effective litter management can slow the development of the beetles and reduce the chances of having excessive build-up of numbers. The poultry houses can be treated with residual insecticides (ideally after cleaning) but often not in the presence of birds (check label instructions). In non poultry situations, infested goods and debris should be removed, followed by spraying with a broad spectrum insecticide.