Brown locust

Definition

A medium-sized locust species in the monotypic genus Locustana, native to Southern Africa, exhibiting classic gregarious behavior and phase polymorphism in response to crowding. The species represents one of the major locust pests of the region, with solitary and gregarious phases differing in coloration, morphology, and behavior.

Etymology

From the brown coloration of solitary-phase individuals and the common name 'locust' for swarming grasshoppers.

Example

Brown locust outbreaks in the Karoo region of South Africa can lead to agricultural damage when high-density populations trigger gregarious phase transformation and subsequent migration.

Synonyms

• Locustana pardalina

Related Terms

• Locustana
• phase polymorphism
• gregarious behavior
• solitary phase
• Desert locust
• Migratory locust
• locust plague

Usage Notes

The only species in its genus; distinguished from other African locust pests such as the desert locust (Schistocerca gregaria) and the red locust (Nomadacris septemfasciata) by geographic range and morphological characters. Phase polymorphism is density-dependent and reversible.