Fly Larva (Maggot) / Potential Screwworm

Scientific Name: Diptera (Larval form)

Order & Family: Order: Diptera; Family: Calliphoridae or Muscidae

Size: 2mm to 20mm depending on species and growth stage.

Fly Larva (Maggot) / Potential Screwworm

Natural Habitat

Inhabits decaying organic matter, necrotic tissue, or open wounds on living hosts.

Diet & Feeding

Consumes necrotic (dead) tissue, exudates, or in the case of primary screwworms, healthy living tissue.

Behavior Patterns

Larvae hatch from eggs laid near or in a wound; they use mouth hooks to feed and burrow into the tissue to grow before pupating.

Risks & Benefits

Risks: Can cause myiasis, tissue destruction, secondary infection, and extreme pain or death in the host. Benefits: Some specific sterilized species are used in 'maggot debridement therapy' to clean necrotic wounds.

Identified on: 12/30/2025