Parallelomma

Parallelomma belongs to the Scathophagidae family within the order Diptera. These insects are recognized in agronomy as specialized pests whose developmental stages are strictly associated with the vegetation of various cereal crops, making them a point of interest for field management.

The primary hosts for Parallelomma include common cereal species such as wheat, barley, and rye. These crops are particularly susceptible during their early growth stages, when the flies deposit their eggs on the young stems, providing immediate nutrition for the emerging larvae.

The biology of this pest involves a complete metamorphosis cycle. The larvae reside inside the plant stem, where they consume the inner tissues. This feeding behavior disrupts the vascular system of the host plant, leading to stunted growth and preventing proper ear development.

The damage caused by Parallelomma is visible as the yellowing and wilting of the central leaf, which often leads to the death of the main stem. This injury significantly impacts yield potential and quality, often resulting in sparse stands and economic losses for cereal farmers.

To effectively manage Parallelomma populations, producers should implement the following control strategies:

• crop rotation and maintaining spatial isolation from previous host fields;
• consistent weed control to remove alternative hosts within and around fields;
• adjusting sowing dates to ensure crop development precedes or bypasses fly activity;
• application of systemic insecticides when monitoring confirms economic threshold levels.