Sugarcane spittlebug

Taxonomy. Mahanarva liturata belongs to the order Hemiptera and the family Cercopidae. Commonly known as the sugarcane spittlebug, this insect is a notorious pest that poses a significant threat to sugarcane cultivation in various tropical and subtropical regions across the globe.

Host plants. The primary host for this pest is sugarcane (Saccharum officinarum). Both nymphs and adults feed on the plant sap, causing direct physiological damage. While sugarcane is the main target, the pest can occasionally affect other related grasses found in the vicinity of the plantations.

Biology and life cycle. The life cycle consists of the egg, five nymphal instars, and the adult stage. Eggs are typically deposited in soil litter or leaf sheaths. Nymphs are easily identified by the white, frothy foam they produce, which protects them from desiccation and predators while they feed on the roots and lower stems of the plant.

Damage and economic impact. Feeding activity disrupts the plant's vascular system, leading to chlorosis, leaf necrosis, and severe stunting. The injection of toxic saliva into the host tissues results in reduced photosynthetic efficiency. In cases of heavy infestation, the entire crop may suffer, causing significant yield losses and lower sucrose content in harvested stalks.

Management strategies. Effective control requires an integrated pest management (IPM) approach. Key strategies include:

• Maintaining field hygiene by managing harvest residues.
• Utilizing biological control agents such as the entomopathogenic fungus Metarhizium anisopliae.
• Implementing regular field monitoring to apply targeted chemical treatments only when pest populations reach critical levels.