Stilt-legged flies

Affected crops: While many species in this family are saprophagous and feed on decaying matter, some are opportunistic pests. They can affect vegetable crops, grain seedlings, and greenhouse plants, especially when crop residues are not properly managed or when humidity levels remain consistently high.

Biology and life cycle: The life cycle of Micropezidae typically involves the oviposition of eggs in damp, organic-rich environments such as decomposing plant stems, manure, or moist soil. Larvae develop within this decaying material. However, if the environment changes or population density increases, they may invade the base of living plant stems to feed on plant tissue.

Character of damage and harmfulness: The primary damage is caused by larvae tunneling into the stems of plants. This feeding activity disrupts the vascular system, preventing the transport of water and nutrients. Infected plants show symptoms of wilting, stunted growth, and in severe cases, the entire plant may collapse, becoming a primary site for secondary fungal infection.

Control measures: The most effective defense against stilt-legged flies is robust sanitation. Growers should promptly remove crop residues from the field and maintain proper irrigation to prevent excessive soil moisture. Deep plowing helps to incorporate organic matter and bury potential breeding sites. In greenhouses, maintaining good aeration and cleanliness is essential to deter adult flies.