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Sphaerophoria macrogaster  (Thomson) (Diptera: Syrphidae) is an important predator of  Myzus persicae  (Sulzer) (Homoptera: Aphididae). In this study, the morphological characteristics and living habits of  S. macrogaster  were observed and recorded. It evaluated the variations in developmental rate and predatory capacity of  S. macrogaster  when preying on  M. persicae  under five constant temperature regimes (16–32°C). Regression analyses assessing the relationship between temperature and the developmental rates of the egg, first, second, and third larval instars, and pupa of  S. macrogaster  were performed. In addition, the life table of hoverflies with  M. persicae  as prey at 28°C was determined. The results demonstrated that development rates at the egg, larval, and pupal stages gradually increased as the temperature increased from 16 to 32°C. The highest threshold temperature occurred at 7.93°C, in the egg stage. The threshold temperature and effective accumulated temperature of the whole generation of  S. macrogaster  were 5.56°C and 312.50° days, respectively. The larvae consumed more prey at 20°C than at other temperatures; however, the maximum value of the larva predation was 28.3  M. persicae  per larva at 28°C, and the average duration of  S. macrogaster  development was 14.3 days from egg to adult emergence. The mortality of the egg stage of  S. macrogaster  was 18.0%, and the survival rate from the egg hatch to the adult stage was 58% at 28°C. These results provide valuable information for the release of  S. macrogaster  into managed systems to reduce  M. persicae  infestations under a wide range of temperature conditions.

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Temperature-dependent development, predation, and life table of  Sphaerophoria macrogaster  (Thomson) (Diptera: Syrphidae) feeding on  Myzus persicae  (Sulzer) (Homoptera: Aphididae)