Bug Identifier
Flower Fly (or Syrphid Fly)
Community identification

Flower Fly (or Syrphid Fly)

Various species within the family Syrphidae (e.g., Eristalis tenax, Allograpta obliqua)

Order & Family
Order: Diptera, Family: Syrphidae
Size
Typically 4 mm to 20 mm (0.16 to 0.79 inches) in length
See this bug in the Encyclopedia

Natural Habitat

Widely distributed globally, found in diverse habitats including gardens, fields, meadows, forests, and urban areas wherever flowering plants and host insects (for larvae) are present.

Diet & Feeding

Adults primarily feed on nectar and pollen from flowers. Larvae of many species are predatory, feeding on aphids, thrips, and other small soft-bodied insects, while some are saprophagous (feeding on decaying organic matter) or mycophagous (feeding on fungi).

Behavior Patterns

They are typically active during the day, foraging for nectar and pollen as adults. Larvae are parasitic and develop inside host insects. Some species are known for mimicry, resembling wasps or bees to deter predators.

Risks & Benefits

Benefits: Flower flies are significant pollinators, contributing to the reproduction of many plants, including agricultural crops. Their predatory larvae are important biological control agents, helping to reduce pest populations like aphids, thus benefiting agriculture by reducing the need for chemical pesticides. Risks: Generally, flower flies pose no risks to humans; they do not sting or bite.