Pest · Hymenoptera

Cheiloneurus saissetiae

Cheiloneurus saissetiae

Description

How to identify

Cheiloneurus saissetiae is a member of the Hymenoptera order and the Encyrtidae family. These tiny parasitic wasps are highly specialized organisms that interact with scale insects in various environments.

The adult wasps are characterized by their metallic body color and complex wing venation. Measuring typically between 1 to 2 mm, they are often difficult to spot without technical equipment.

The life cycle involves the female laying eggs inside or beneath the host scale insects. The developing larvae feed on the host's tissues, eventually causing its death.

Due to their size and cryptic behavior, they often remain unnoticed in orchards until a significant population density is reached.

Identification often requires expert taxonomic assessment, as there are many closely related species within the Encyrtidae family that exhibit similar physical traits.

What it damages

The primary concern regarding Cheiloneurus saissetiae is its role as a hyperparasitoid. By targeting beneficial insects that control primary pests, it can disrupt natural pest suppression.

Common hosts affected by its presence include various citrus trees, ornamental shrubs, and trees heavily infested by soft scales (Coccidae).

Its impact is most notable in agricultural systems that rely on biological control agents. The wasp reduces the efficacy of these agents, indirectly allowing scale insect populations to surge.

While the wasp does not consume plant tissue directly, the resulting increase in scale insect infestations leads to plant stress, reduced vigor, and aesthetic damage to foliage.

Farmers may observe increased honeydew production and subsequent sooty mold growth on plants where this parasitic wasp has interfered with natural control mechanisms.

Control measures

Controlling this species requires an integrated approach that prioritizes the conservation of beneficial insects within the agricultural landscape.

Avoid the use of broad-spectrum insecticides, as these chemicals frequently kill both the primary pests and their beneficial parasitoids, leading to secondary outbreaks.

Selectivity is key; when intervention is necessary, choose insecticides that are compatible with integrated pest management (IPM) programs and have minimal impact on non-target species.

Cultural practices such as pruning infested branches and ensuring proper plant spacing can help reduce the habitat available for scale insects and their associated parasites.

Regular monitoring of the parasite-host ratio is recommended to determine if current population trends necessitate any adjustment to the crop management strategy.

Biology

Taxonomy

Latin name
Cheiloneurus saissetiae
Order
Hymenoptera
Family
Encyrtidae
EPPO code
CHEUSA
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