Bristletails of the Machilidae family

While primarily found in soil and leaf litter, these insects can become agricultural pests in specific environments. They predominantly affect greenhouse crops, vegetable seedlings, and nursery plants. They are attracted to environments with high humidity and significant organic matter, which provide ideal conditions for their feeding and reproduction.

Biology and life cycle: Machilidae undergo incomplete metamorphosis. Females lay eggs in soil crevices or protected, moist organic debris. The nymphs resemble miniature adults and progress through several instars before becoming sexually mature. A unique characteristic of this family is that they continue to molt throughout their entire adult life, which is atypical among most other insect orders.

Nature of damage and harmfulness: The primary damage occurs when these insects scrape the epidermis of young leaves or graze on delicate root tissues. This feeding behavior creates open wounds on the plants, which act as entry points for bacterial and fungal pathogens. In dense plantings, significant damage can result in stunted growth and the eventual death of young seedlings.

Control measures: Effective management of Machilidae involves modifying the environmental conditions that favor their survival. Recommended strategies include:

• Improving soil drainage and aeration to reduce surface moisture.
• Removing debris, mulch, and weeds that serve as daytime refuges.
• Monitoring soil moisture levels in greenhouses to prevent excessive dampness.
• Applying insecticidal dusts or biological control agents if the population density reaches economic threshold levels.