Regal harvester ant

Messor regalis is a member of the Hymenoptera order, belonging to the Formicidae family. As a harvester ant, it is primarily known for its habit of collecting and storing large quantities of seeds from both wild and cultivated plants.

The pest causes significant damage to agricultural crops, particularly cereals like wheat and barley, as well as oilseeds. By harvesting seeds from the soil surface and standing plants, these ants can reduce plant density and crop yield, especially in regions with arid climates where food resources are limited.

The biology of the species follows a complete metamorphosis: egg, larva, pupa, and adult. They establish deep subterranean nests where seeds are stored in specialized granaries. The colony structure is highly organized, allowing for efficient foraging strategies that can strip a patch of ground of seeds within a short period.

The impact is observed through the direct loss of harvest material and the physical disruption of the field environment. By removing seeds, the ants negatively affect crop establishment, and their constant movement between nests and fields creates paths that can disrupt soil irrigation and facilitate erosion.

Control measures primarily involve mechanical disruption of nests through deep ploughing. Chemical control is also applied using targeted bait stations that contain slow-acting insecticides, which are carried back into the nest by workers, eventually eliminating the queen and the entire colony.