Bug Identifier
Rat-tailed maggot
Community identification

Rat-tailed maggot

Eristalis tenax

Order & Family
Diptera: Syrphidae
Size
20 mm (body) to 100 mm (including tail)
See this bug in the Encyclopedia

Natural Habitat

Stagnant water rich in organic matter, such as lagoons, sewage, or manure pits

Diet & Feeding

Decaying organic matter and bacteria via filter feeding

Behavior Patterns

Uses its long respiratory siphon (tail) to breathe atmospheric air while submerged in low-oxygen environments

Risks & Benefits

Beneficial as pollinators in adult stage (drone fly); can rarely cause accidental intestinal myiasis in humans if contaminated water is ingested