Pest · Mites

Acaropsellina

Acaropsellina sollers

Description

How to identify

Acaropsellina Acaropsellina sollers is a predatory mite belonging to the family Cheyletidae. Unlike plant-feeding mites, this species acts as a natural biological control agent in diverse ecosystems.

The morphology of this mite includes specialized palps used to grasp prey, which is characteristic of the Cheyletidae family. Their bodies are typically small and range in color from yellowish to reddish.

The life cycle encompasses several stages including eggs, larvae, and nymphal stages. Progression through these stages is highly dependent on both temperature and the availability of host prey.

They are generally found in hidden locations, such as leaf crevices or within the webs of spider mites, where they actively search for their targets.

Due to their microscopic size, identifying Acaropsellina requires professional entomological expertise and microscopic analysis of samples collected from the field.

What it damages

Acaropsellina is not a plant pest. It is an obligate predator, meaning it consumes only other arthropods and does not feed on plant tissue or sap, making it harmless to crops.

The primary food source for this mite includes various species of spider mites (Tetranychidae), which are notorious for causing significant damage to agricultural productivity.

By preying on these pests, Acaropsellina contributes to the suppression of pest populations, often keeping them below the economic injury level for many crops.

Farmers benefit from the presence of this mite as it acts as an ecological service provider, reducing the need for intensive synthetic pesticide applications.

There is no risk of crop damage; instead, their presence is an indicator of a healthy, functioning integrated pest management system within the field.

When it appears

The activity of Acaropsellina typically begins in late spring, as temperatures rise and the population of prey species starts to grow in fields and gardens.

Peak population density is usually observed during the warmest months of the summer, aligning with the highest reproductive rates of the spider mites they consume.

As autumn approaches and temperatures drop, the mites seek overwintering sites, entering a state of dormancy to survive the winter months until the next season.

The population dynamics of this predator are inherently linked to the presence of its prey, ensuring that the predator-prey relationship remains balanced throughout the season.

Environmental factors such as high humidity and optimal temperatures facilitate the rapid development of multiple generations during the vegetation period.

Control measures

The most effective strategy to support Acaropsellina populations is the adoption of integrated pest management (IPM) practices that prioritize the conservation of natural enemies.

It is essential to avoid the indiscriminate use of broad-spectrum insecticides, which can decimate the populations of these beneficial predatory mites.

Implementing selective chemical controls that have low toxicity to predatory mites allows these beneficials to thrive while still controlling the target pest species.

Maintaining crop borders and diverse habitats helps provide a reservoir for predatory mites, allowing them to recolonize fields after agricultural interventions.

  • Preserve natural habitats near crops.
  • Use selective pesticides only when necessary.
  • Monitor pest-to-predator ratios frequently.
Biology

Taxonomy

Latin name
Acaropsellina sollers
Order
Mites
Family
Cheyletidae
EPPO code
ACSLSO
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