Mayfly Exuvia (Molt)
Scientific Name: Ephemeroptera (Order)
Order & Family: Order Ephemeroptera; Family varies (e.g., Baetidae or Heptageniidae)
Size: Typically 1 mm to 30 mm depending on the species.
Natural Habitat
Near freshwater sources like rivers, lakes, and streams; often found clinging to screens or walls after molting.
Diet & Feeding
Larvae (nymphs) are usually herbivores or detritivores eating algae and organic debris; adults do not eat.
Behavior Patterns
Mayflies are unique for having a 'subimago' stage where they molt once more after reaching a winged form; the object in the image is the shed skin (exuvia) left behind during this process.
Risks & Benefits
No risk to humans as they do not bite or sting; they are highly beneficial as a food source for fish and birds, and serve as indicators of good water quality.
Identified on: 5/22/2026