Fidicina pullata

Fidicina pullata is a species of cicada belonging to the family Cicadidae, order Hemiptera. These insects are recognized by their robust bodies and large, transparent wings with a complex network of veins.

Adult males are particularly notable for their loud acoustic signaling, produced by specialized organs on the abdomen, which is the primary indicator of their presence in an area.

The life cycle is characterized by a long subterranean larval stage, which can span several years. This extended period underground makes them difficult to track and control.

Larvae are equipped with modified front legs for digging through soil. They possess a sucking mouthpart used to extract sap from the roots of various host plants.

Adults are active flyers and are typically found in the canopy of trees, where they feed on sap from young stems and branches during the breeding season.

Damage caused by Fidicina pullata occurs in two ways: through the feeding of the root-dwelling larvae and the sap-sucking activity of the winged adults.

Larval feeding weakens the root system, causing trees and crops to exhibit stunted growth, reduced nutrient uptake, and increased vulnerability to environmental stress.

Adults damage the plant by puncturing stems and shoots to feed on phloem sap. This feeding activity can disrupt physiological processes and lead to localized tissue necrosis.

Oviposition (egg-laying) in young twigs by females causes mechanical damage, often leading to branch breakage or the secondary infection of woody tissues.

In cases of high infestation, the cumulative impact of root feeding and shoot damage can lead to significant yield losses and even tree mortality in sensitive cultivars.

The most prominent sign is the characteristic loud chirping or buzzing noise produced by males, which intensifies during the peak of the breeding season.

Visual signs on plants include yellowing leaves, tip dieback, and general lack of vigor. These symptoms are often mistaken for nutrient deficiencies or drought stress.

In the soil, one might find exit holes created by final-instar nymphs as they emerge from the ground to molt into the adult stage.

Branches may show longitudinal scarring on the bark, which indicates where females have inserted their eggs, sometimes resulting in sap exudation from the injury sites.

Increased ant activity on the trunks can sometimes be a secondary sign, as ants may be attracted to the sap leaking from the puncture wounds made by the cicadas.

Control strategies for Fidicina pullata require an integrated approach focusing on both larval management in the soil and adult suppression.

Cultivation practices like deep tilling or soil aeration can disrupt the soil environment and expose larvae to predators or adverse conditions.

Chemical control involving systemic or contact insecticides may be applied when adults are emerging in large numbers, aiming to reduce the mating population.

Biological control using entomopathogenic fungi, which are natural enemies of soil-dwelling larvae, offers a sustainable alternative to traditional chemical treatments.

• Monitoring populations using light traps to determine the best timing for interventions.
• Removing and destroying infested branches showing signs of egg-laying.
• Improving plant health through proper fertilization and irrigation to help recover from root feeding.