Tomaspis inca

Taxonomic position: Tomaspis inca belongs to the order Hemiptera and the family Cercopidae. Commonly referred to as a species of spittlebug or froghopper, this insect is a significant pest in tropical agricultural ecosystems, particularly in South American sugarcane plantations.

Host crops and damage: The primary host is sugarcane. Both nymphs and adults extract sap from the plant, which directly interferes with the plant’s physiological processes. The impact is felt through reduced sugar content, stunted plant growth, and a general decline in the vitality of the crop, leading to substantial yield losses.

Biology and life cycle: The life cycle progresses through eggs, nymphs, and adults. Nymphs are unique due to their ability to produce a protective foam mass. This "spittle" serves as a crucial defense mechanism against dehydration and natural predators, allowing the nymphs to feed and develop safely at the base of the plant or in the root zone.

Damage symptoms: Feeding activity causes visible chlorosis on leaves, which often progresses to necrosis. In addition to direct sap loss, the saliva injected by the insect during feeding can be toxic to the plant tissue. Furthermore, wounds created by the insects serve as entry points for secondary infections such as fungal rots, further degrading the cane quality.

Control measures: Management of Tomaspis inca relies on an integrated approach. Effective strategies include:

• Application of entomopathogenic fungi such as Metarhizium anisopliae.
• Cultural practices like field sanitation to eliminate egg-laying sites.
• Monitoring pest populations with traps to time insecticide applications accurately.
• Planting resistant or tolerant sugarcane varieties where available.