3.Energy Consumed for Flight Generally,flies or mosquitoes (Diptera) and wasps (Hymenoptera) consume mainly carbohydrates as energy for flight. Migratory pests consume fats to maintain flight for a long time. Generally, flies or mosquitoes (Diptera) and wasps (Hymenoptera) consume mainly carbohydrates as energy for flight. Migratory pests consume fats to maintain flight for a long time. 3. Energy Consumed for Flight Energy Consumed for Flight