Mayfly exuvia (molted skin)
Scientific Name: Order Ephemeroptera
Order & Family: Order Ephemeroptera (Families vary, such as Ephemeridae or Baetidae)
Size: 1 cm to 3 cm (excluding long tail filaments)
Natural Habitat
Nymphs live in freshwater lakes, rivers, and streams; adults and subimagos dwell on nearby vegetation or structures.
Diet & Feeding
Nymphs eat algae and organic debris; adults have non-functional mouthparts and do not eat.
Behavior Patterns
Mayflies are unique for molting once more after reaching a winged stage (subimago). They often emerge in massive swarms to mate and die within hours or days.
Risks & Benefits
Harmless to humans; vital ecological role as a food source for fish and birds, and serves as an indicator of good water quality.
Identified on: 6/27/2026