Predation potential of flower fly Eupeodes nuba (Wiedemann, 1830) (Diptera: Syrphidae) on black bean aphid Aphis fabae Scopoli (Hemiptera: Aphididae) and the parasitoids species on its host in the field

The flower fly species, Eupeodes nuba (Wiedemann, 1830) (Diptera: Syrphidae) is crucial for agroecosystems as it provides various ecosystem services such pest control through the use of predatory larvae and crop pollination by adults. In this research, consumption rate different instars Aphis fabae (Scopoli, 1763) E. has been studied under laboratory conditions at 25±2 °C, 60±10% humidity (RH). Fifty aphids one larva were present in each replicate. results showed that maximum number A. consumed was 49.13 individuals third instar, followed 35.73 second instar 16.26 first predator. highest daily occurred during heavily parasitized aphid parasitoids, Binodoxys acalephae (Marshall, 1896), Lysiphlebus fabarum Aphelinus asychis (Walker, 1839) on broad bean. Parasitization rates these parasitoids increased bean plant season. recording a new host psychic. survey three indicated L. had population December, parasitoid B. January, recorded February. It seems biological can be used an alternative to chemical pesticides fabae.